The latest officially reported population of the Dominican Republic was 11,520,487 in 2025 vs 835,986 people in Guyana in 2025. In 2026, based on the adjusted UN estimation, the current Dominican Republic's population is 11,656,588 people compared to 843,423 in Guyana.
Population statistics:
- The Dominican Republic's population is 13.8 times bigger than Guyana's.
- The Dominican Republic is ranked the 85th most populous country in the world, while Guyana is the 162nd.
- The countries together account for 0.15% of the world: 0.14% for the Dominican Republic vs 0.01% for Guyana.
- For the last 10 years, the Dominican Republic has had an average growth rate of +1.01% per year vs +0.94% in Guyana.
- Since 2006, the population of the Dominican Republic has increased from 9.34M people to 11.7M (24.8% growth), while Guyana has grown from 759K to 843K (11.1% growth).
Dominican Republic vs Guyana: population by year and forecast
| Year | Population | |
|---|---|---|
Dominican Republic
|
Guyana
|
|
| 2100 | 11,752,784 | 893,400 |
| 2099 | 11,815,252 | 897,049 |
| 2098 | 11,877,117 | 900,704 |
| 2097 | 11,937,719 | 903,852 |
| 2096 | 11,997,841 | 907,213 |
| 2095 | 12,057,342 | 910,422 |
| 2094 | 12,115,914 | 913,693 |
| 2093 | 12,173,845 | 916,720 |
| 2092 | 12,230,436 | 919,754 |
| 2091 | 12,286,064 | 922,566 |
| 2090 | 12,340,658 | 925,355 |
| 2089 | 12,394,314 | 928,338 |
| 2088 | 12,446,122 | 931,122 |
| 2087 | 12,497,009 | 933,697 |
| 2086 | 12,546,890 | 936,460 |
| 2085 | 12,595,176 | 939,094 |
| 2084 | 12,641,964 | 941,456 |
| 2083 | 12,686,626 | 943,457 |
| 2082 | 12,730,579 | 945,740 |
| 2081 | 12,772,531 | 947,585 |
| 2080 | 12,813,012 | 949,719 |
| 2079 | 12,851,452 | 951,522 |
| 2078 | 12,887,954 | 953,282 |
| 2077 | 12,923,053 | 954,797 |
| 2076 | 12,955,793 | 956,257 |
| 2075 | 12,986,456 | 957,459 |
| 2074 | 13,015,960 | 958,504 |
| 2073 | 13,043,173 | 959,702 |
| 2072 | 13,068,464 | 960,812 |
| 2071 | 13,091,361 | 961,668 |
| 2070 | 13,112,865 | 962,203 |
| 2069 | 13,131,909 | 962,904 |
| 2068 | 13,149,031 | 963,022 |
| 2067 | 13,163,707 | 963,054 |
| 2066 | 13,176,149 | 962,921 |
| 2065 | 13,187,108 | 962,791 |
| 2064 | 13,195,655 | 962,542 |
| 2063 | 13,201,391 | 962,076 |
| 2062 | 13,204,648 | 961,203 |
| 2061 | 13,205,517 | 960,260 |
| 2060 | 13,203,471 | 959,002 |
| 2059 | 13,199,071 | 957,472 |
| 2058 | 13,190,969 | 956,199 |
| 2057 | 13,180,617 | 954,833 |
| 2056 | 13,168,370 | 953,856 |
| 2055 | 13,153,175 | 952,473 |
| 2054 | 13,135,187 | 950,751 |
| 2053 | 13,114,225 | 948,550 |
| 2052 | 13,090,209 | 946,418 |
| 2051 | 13,063,047 | 944,600 |
| 2050 | 13,032,286 | 942,132 |
| 2049 | 12,999,890 | 939,501 |
| 2048 | 12,964,676 | 936,652 |
| 2047 | 12,927,592 | 933,791 |
| 2046 | 12,887,813 | 930,620 |
| 2045 | 12,845,519 | 927,519 |
| 2044 | 12,800,765 | 924,138 |
| 2043 | 12,754,444 | 920,425 |
| 2042 | 12,705,845 | 916,573 |
| 2041 | 12,655,390 | 912,228 |
| 2040 | 12,602,701 | 908,107 |
| 2039 | 12,548,652 | 903,833 |
| 2038 | 12,491,254 | 899,477 |
| 2037 | 12,431,970 | 895,081 |
| 2036 | 12,370,131 | 890,800 |
| 2035 | 12,305,889 | 886,268 |
| 2034 | 12,239,008 | 881,349 |
| 2033 | 12,170,158 | 876,484 |
| 2032 | 12,098,734 | 871,096 |
| 2031 | 12,024,555 | 866,145 |
| 2030 | 11,947,536 | 860,981 |
| 2029 | 11,867,856 | 856,128 |
| 2028 | 11,785,130 | 851,179 |
| 2027 | 11,699,216 | 845,822 |
| 2026 | 11,611,567 | 840,890 |
| 2025 | 11,520,487 | 835,986 |
| 2024 | 11,427,557 | 831,087 |
| 2023 | 11,331,265 | 826,353 |
| 2022 | 11,230,734 | 821,637 |
| 2021 | 11,123,476 | 815,482 |
| 2020 | 11,008,300 | 807,481 |
| 2019 | 10,894,043 | 807,665 |
| 2018 | 10,782,053 | 791,556 |
| 2017 | 10,666,843 | 768,479 |
| 2016 | 10,551,430 | 763,548 |
| 2015 | 10,434,829 | 758,781 |
| 2014 | 10,315,528 | 754,229 |
| 2013 | 10,193,833 | 750,021 |
| 2012 | 10,070,411 | 746,288 |
| 2011 | 9,945,621 | 746,153 |
| 2010 | 9,820,175 | 749,256 |
| 2009 | 9,695,265 | 752,094 |
| 2008 | 9,573,130 | 754,606 |
| 2007 | 9,455,658 | 756,861 |
| 2006 | 9,341,183 | 758,966 |
| 2005 | 9,225,034 | 760,914 |
| 2004 | 9,104,892 | 762,418 |
| 2003 | 8,980,620 | 763,101 |
| 2002 | 8,852,235 | 763,652 |
| 2001 | 8,720,283 | 764,477 |
| 2000 | 8,584,190 | 764,832 |
| 1999 | 8,446,208 | 764,483 |
| 1998 | 8,310,362 | 763,586 |
| 1997 | 8,174,078 | 762,245 |
| 1996 | 8,032,894 | 760,526 |
| 1995 | 7,888,115 | 758,388 |
| 1994 | 7,741,694 | 755,822 |
| 1993 | 7,594,572 | 752,965 |
| 1992 | 7,447,474 | 749,911 |
| 1991 | 7,299,853 | 747,861 |
| 1990 | 7,151,166 | 749,894 |
| 1989 | 7,002,295 | 754,865 |
| 1988 | 6,855,734 | 759,663 |
| 1987 | 6,712,515 | 764,120 |
| 1986 | 6,571,208 | 768,098 |
| 1985 | 6,430,404 | 771,477 |
| 1984 | 6,289,040 | 774,111 |
| 1983 | 6,147,248 | 775,891 |
| 1982 | 6,007,114 | 776,712 |
| 1981 | 5,868,453 | 776,453 |
| 1980 | 5,729,037 | 774,367 |
| 1979 | 5,589,690 | 770,062 |
| 1978 | 5,451,882 | 764,586 |
| 1977 | 5,315,443 | 758,654 |
| 1976 | 5,180,404 | 752,253 |
| 1975 | 5,046,776 | 745,393 |
| 1974 | 4,914,197 | 738,057 |
| 1973 | 4,782,227 | 730,138 |
| 1972 | 4,651,883 | 721,617 |
| 1971 | 4,524,234 | 712,662 |
| 1970 | 4,399,290 | 702,705 |
| 1969 | 4,277,035 | 690,223 |
| 1968 | 4,157,189 | 676,160 |
| 1967 | 4,038,928 | 662,311 |
| 1966 | 3,921,847 | 648,646 |
| 1965 | 3,808,963 | 635,128 |
| 1964 | 3,698,559 | 621,764 |
| 1963 | 3,588,287 | 608,537 |
| 1962 | 3,479,936 | 595,461 |
| 1961 | 3,373,233 | 582,568 |
| 1960 | 3,268,336 | 569,143 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/dominican-republic/guyana | CC BY 
From 2006 to 2016, the population of the Dominican Republic increased by 1,210,247 people (a 13% growth), while Guyana gained 4,582 people (a 0.6% growth).
For the next 10 years, from 2016 to 2026, the Dominican Republic gained 1,105,158 people (a 10.5% growth), while Guyana's population increased by 79,875 people (a 10.5% growth).
The Dominican Republic was ranked 85th most populous country in 2006 and is still 85th in 2026. Guyana was ranked 160th in 2006 and ranked 162nd now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) the Dominican Republic's population will grow by 11.8% to 13,032,286 people with a rank change from 85th to 90th. The population of Guyana will increase by 11.7% to 942,132 people and will still be ranked 162nd.
The Dominican Republic is projected to reach its peak in 2061 at 13.2M people compared to the peak of 963K people in 2067 for Guyana.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Dominican Republic
|
Guyana
|
|
| 2100 | -0.53% | -0.41% |
| 2099 | -0.52% | -0.41% |
| 2098 | -0.51% | -0.35% |
| 2097 | -0.5% | -0.37% |
| 2096 | -0.49% | -0.35% |
| 2095 | -0.48% | -0.36% |
| 2094 | -0.48% | -0.33% |
| 2093 | -0.46% | -0.33% |
| 2092 | -0.45% | -0.3% |
| 2091 | -0.44% | -0.3% |
| 2090 | -0.43% | -0.32% |
| 2089 | -0.42% | -0.3% |
| 2088 | -0.41% | -0.28% |
| 2087 | -0.4% | -0.3% |
| 2086 | -0.38% | -0.28% |
| 2085 | -0.37% | -0.25% |
| 2084 | -0.35% | -0.21% |
| 2083 | -0.35% | -0.24% |
| 2082 | -0.33% | -0.19% |
| 2081 | -0.32% | -0.22% |
| 2080 | -0.3% | -0.19% |
| 2079 | -0.28% | -0.18% |
| 2078 | -0.27% | -0.16% |
| 2077 | -0.25% | -0.15% |
| 2076 | -0.24% | -0.13% |
| 2075 | -0.23% | -0.11% |
| 2074 | -0.21% | -0.12% |
| 2073 | -0.19% | -0.12% |
| 2072 | -0.17% | -0.09% |
| 2071 | -0.16% | -0.06% |
| 2070 | -0.15% | -0.07% |
| 2069 | -0.13% | -0.01% |
| 2068 | -0.11% | -0.003% |
| 2067 | -0.09% | 0.01% |
| 2066 | -0.08% | 0.01% |
| 2065 | -0.06% | 0.03% |
| 2064 | -0.04% | 0.05% |
| 2063 | -0.02% | 0.09% |
| 2062 | -0.007% | 0.1% |
| 2061 | 0.02% | 0.13% |
| 2060 | 0.03% | 0.16% |
| 2059 | 0.06% | 0.13% |
| 2058 | 0.08% | 0.14% |
| 2057 | 0.09% | 0.1% |
| 2056 | 0.12% | 0.15% |
| 2055 | 0.14% | 0.18% |
| 2054 | 0.16% | 0.23% |
| 2053 | 0.18% | 0.23% |
| 2052 | 0.21% | 0.19% |
| 2051 | 0.24% | 0.26% |
| 2050 | 0.25% | 0.28% |
| 2049 | 0.27% | 0.3% |
| 2048 | 0.29% | 0.31% |
| 2047 | 0.31% | 0.34% |
| 2046 | 0.33% | 0.33% |
| 2045 | 0.35% | 0.37% |
| 2044 | 0.36% | 0.4% |
| 2043 | 0.38% | 0.42% |
| 2042 | 0.4% | 0.48% |
| 2041 | 0.42% | 0.45% |
| 2040 | 0.43% | 0.47% |
| 2039 | 0.46% | 0.48% |
| 2038 | 0.48% | 0.49% |
| 2037 | 0.5% | 0.48% |
| 2036 | 0.52% | 0.51% |
| 2035 | 0.55% | 0.56% |
| 2034 | 0.57% | 0.56% |
| 2033 | 0.59% | 0.62% |
| 2032 | 0.62% | 0.57% |
| 2031 | 0.64% | 0.6% |
| 2030 | 0.67% | 0.57% |
| 2029 | 0.7% | 0.58% |
| 2028 | 0.73% | 0.63% |
| 2027 | 0.75% | 0.59% |
| 2026 | 0.79% | 0.59% |
| 2025 | 0.81% | 0.59% |
| 2024 | 0.85% | 0.57% |
| 2023 | 0.9% | 0.57% |
| 2022 | 0.96% | 0.75% |
| 2021 | 1.05% | 0.99% |
| 2020 | 1.05% | -0.02% |
| 2019 | 1.04% | 2.04% |
| 2018 | 1.08% | 3% |
| 2017 | 1.09% | 0.65% |
| 2016 | 1.12% | 0.63% |
| 2015 | 1.16% | 0.6% |
| 2014 | 1.19% | 0.56% |
| 2013 | 1.23% | 0.5% |
| 2012 | 1.25% | 0.02% |
| 2011 | 1.28% | -0.41% |
| 2010 | 1.29% | -0.38% |
| 2009 | 1.28% | -0.33% |
| 2008 | 1.24% | -0.3% |
| 2007 | 1.23% | -0.28% |
| 2006 | 1.26% | -0.26% |
| 2005 | 1.32% | -0.2% |
| 2004 | 1.38% | -0.09% |
| 2003 | 1.45% | -0.07% |
| 2002 | 1.51% | -0.11% |
| 2001 | 1.59% | -0.05% |
| 2000 | 1.63% | 0.05% |
| 1999 | 1.63% | 0.12% |
| 1998 | 1.67% | 0.18% |
| 1997 | 1.76% | 0.23% |
| 1996 | 1.84% | 0.28% |
| 1995 | 1.89% | 0.34% |
| 1994 | 1.94% | 0.38% |
| 1993 | 1.98% | 0.41% |
| 1992 | 2.02% | 0.27% |
| 1991 | 2.08% | -0.27% |
| 1990 | 2.13% | -0.66% |
| 1989 | 2.14% | -0.63% |
| 1988 | 2.13% | -0.58% |
| 1987 | 2.15% | -0.52% |
| 1986 | 2.19% | -0.44% |
| 1985 | 2.25% | -0.34% |
| 1984 | 2.31% | -0.23% |
| 1983 | 2.33% | -0.11% |
| 1982 | 2.36% | 0.03% |
| 1981 | 2.43% | 0.27% |
| 1980 | 2.49% | 0.56% |
| 1979 | 2.53% | 0.72% |
| 1978 | 2.57% | 0.78% |
| 1977 | 2.61% | 0.85% |
| 1976 | 2.65% | 0.92% |
| 1975 | 2.7% | 0.99% |
| 1974 | 2.76% | 1.08% |
| 1973 | 2.8% | 1.18% |
| 1972 | 2.82% | 1.26% |
| 1971 | 2.84% | 1.42% |
| 1970 | 2.86% | 1.81% |
| 1969 | 2.88% | 2.08% |
| 1968 | 2.93% | 2.09% |
| 1967 | 2.99% | 2.11% |
| 1966 | 2.96% | 2.13% |
| 1965 | 2.99% | 2.15% |
| 1964 | 3.07% | 2.17% |
| 1963 | 3.11% | 2.2% |
| 1962 | 3.16% | 2.21% |
| 1961 | 3.21% | 2.36% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/dominican-republic/guyana | CC BY
In 2025, the population of the Dominican Republic grew by 0.81%, while Guyana's population grew by 0.59%.
Live population counters
|
Dominican Republic
|
Guyana
|
|
|---|---|---|
| Current population |
11656588
|
843423
|
| Population rank | 85/197 | 162/197 |
| Percent of world population | 0.14% | 0.01% |
| One net population change |
5.67 minutes
|
1.79 hours
|
| One birth every |
2.61 minutes
|
31.8 minutes
|
| One death every |
7.36 minutes
|
1.41 hours
|
| Daily growth/decline | +255 | +13 |
| Annual growth/decline | +92,930 | +4,899 |
| Annual growth/decline rate | +0.81% | +0.59% |
| Population growth rate rank | 111/197 | 124/197 |
| One migration net change every |
14.9 minutes
|
1.73 hours
|
| Annual migration change | -35,306 | -5,092 |
| Net migration rank | 170/196 | 116/196 |
| Foreign-born residents | 738,667 | 54,175 |
| Foreign-born residents rank | 69/195 | 147/195 |
| Foreign-born share of population | 6.5% | 6.5% |
| Foreign-born share rank | 81/195 | 82/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Dominican Republic
|
Guyana
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -35,306 | - | -5,092 |
| 2024 | 129,943 | -34,806 | 10,310 | -5,407 |
| 2023 | 132,360 | -34,915 | 10,716 | -6,161 |
| 2022 | 138,767 | -35,153 | 11,042 | -6,161 |
| 2021 | 128,866 | -17,957 | 8,125 | -689 |
| 2020 | 137,417 | -17,957 | 10,307 | -1,743 |
| 2019 | 144,869 | -35,797 | 11,665 | -20,603 |
| 2018 | 150,852 | -35,934 | 10,946 | 30,213 |
| 2017 | 151,565 | -36,069 | 11,108 | -6,107 |
| 2016 | 151,550 | -36,219 | 11,168 | -6,309 |
| 2015 | 154,258 | -36,375 | 11,199 | -6,527 |
| 2014 | 157,260 | -36,543 | 11,143 | -6,710 |
| 2013 | 159,330 | -36,673 | 10,887 | -6,907 |
| 2012 | 160,915 | -36,737 | 10,633 | -7,152 |
| 2011 | 162,094 | -36,687 | 10,713 | -13,920 |
| 2010 | 162,072 | -36,587 | 10,652 | -13,655 |
| 2009 | 160,893 | -36,561 | 10,758 | -13,425 |
| 2008 | 156,664 | -36,723 | 10,792 | -13,143 |
| 2007 | 152,066 | -37,076 | 10,741 | -12,906 |
| 2006 | 151,122 | -37,170 | 10,525 | -12,575 |
| 2005 | 155,405 | -37,063 | 10,455 | -12,290 |
| 2004 | 158,789 | -36,851 | 10,767 | -11,938 |
| 2003 | 163,267 | -36,657 | 11,344 | -11,551 |
| 2002 | 166,740 | -36,575 | 12,218 | -13,116 |
| 2001 | 170,193 | -36,441 | 13,307 | -14,050 |
| 2000 | 171,684 | -33,256 | 14,128 | -14,090 |
| 1999 | 167,742 | -30,228 | 14,763 | -14,115 |
| 1998 | 164,287 | -30,108 | 15,292 | -14,155 |
| 1997 | 168,419 | -30,034 | 15,568 | -14,019 |
| 1996 | 174,008 | -30,018 | 15,768 | -13,871 |
| 1995 | 175,439 | -29,873 | 15,991 | -13,614 |
| 1994 | 176,882 | -29,610 | 16,185 | -13,426 |
| 1993 | 177,691 | -30,719 | 16,099 | -13,137 |
| 1992 | 177,481 | -30,262 | 15,990 | -12,844 |
| 1991 | 177,371 | -29,351 | 15,896 | -14,949 |
| 1990 | 176,748 | -27,397 | 15,917 | -20,930 |
| 1989 | 175,365 | -26,984 | 15,947 | -20,870 |
| 1988 | 171,291 | -26,552 | 16,189 | -20,860 |
| 1987 | 167,552 | -25,850 | 16,600 | -20,848 |
| 1986 | 165,674 | -24,772 | 16,940 | -20,647 |
| 1985 | 164,091 | -23,388 | 17,292 | -20,337 |
| 1984 | 164,263 | -22,239 | 17,466 | -19,702 |
| 1983 | 163,136 | -21,582 | 17,753 | -19,075 |
| 1982 | 159,597 | -20,886 | 17,644 | -17,959 |
| 1981 | 158,419 | -19,809 | 17,471 | -16,648 |
| 1980 | 157,697 | -17,485 | 17,298 | -13,952 |
| 1979 | 154,779 | -16,296 | 17,402 | -12,138 |
| 1978 | 154,043 | -16,909 | 17,539 | -11,841 |
| 1977 | 152,825 | -17,077 | 17,805 | -11,636 |
| 1976 | 151,201 | -16,866 | 18,083 | -11,445 |
| 1975 | 149,339 | -16,425 | 18,317 | -11,231 |
| 1974 | 147,652 | -15,402 | 18,589 | -11,012 |
| 1973 | 146,283 | -14,594 | 18,991 | -10,731 |
| 1972 | 143,255 | -14,262 | 19,219 | -10,448 |
| 1971 | 140,473 | -14,156 | 19,273 | -10,142 |
| 1970 | 137,835 | -14,255 | 19,233 | -8,439 |
| 1969 | 135,445 | -14,531 | 19,133 | -4,969 |
| 1968 | 133,666 | -14,901 | 19,035 | -5,071 |
| 1967 | 133,091 | -15,324 | 18,933 | -5,192 |
| 1966 | 132,096 | -15,701 | 18,862 | -5,277 |
| 1965 | 125,345 | -15,978 | 18,791 | -5,347 |
| 1964 | 127,504 | -16,059 | 18,729 | -5,437 |
| 1963 | 124,994 | -15,889 | 18,606 | -5,434 |
| 1962 | 122,977 | -15,389 | 18,344 | -5,379 |
| 1961 | 120,316 | -14,511 | 18,092 | -5,267 |
| 1960 | 117,346 | -13,344 | 17,867 | -3,837 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/dominican-republic/guyana | CC BY
Over the last 10 years, 81.6% of the population change in the Dominican Republic is from natural causes (a gain of 1,420,447 people) and 18.4% is from migration (a loss of 321,182 people). In Guyana 78.3% is from natural causes (a gain of 106,586 people) and 21.7% is from migration (a loss of 29,494 people).
As of 2024, 738,667 residents or 6.5% of the population were not native-born in the Dominican Republic, compared to 54,175 people or 6.5% in Guyana.
Biggest cities by population
|
Dominican Republic
|
|
|---|---|
| City | Population |
| Santo Domingo | 2.2M |
| Santiago de los Caballeros | 1.34M |
| Puerto Plata | 338K |
| La Vega | 282K |
| Higuey | 251K |
| San Cristobal | 233K |
| San Pedro de Macoris | 217K |
| San Francisco de Macoris | 188K |
| San Juan de la Maguana | 169K |
| Bonao | 158K |
|
Guyana
|
|
|---|---|
| City | Population |
| Georgetown | 235K |
| Linden | 28.7K |
| New Amsterdam | 14.8K |
Compare countries by 7 more topics
Population differences between the Dominican Republic and Guyana
|
Dominican Republic
|
Guyana
|
|
|---|---|---|
| Life expectancy | 74.1 years | 70.6 years |
| Average age | 32 years | 30.4 years |
| Median age | 29.3 years | 27.2 years |
| Male:Female ratio | 49.7:50.3 | 48.7:51.3 |
| Fertility rate | 2.22 births per woman | 2.4 births per woman |
| Population density | 624 ppl/mi² | 10.3 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/dominican-republic/guyana | CC BY
Help us show the world through your eyes
Share a photo of your city and help others discover what it looks like to live there. Your contribution makes our data come alive.
Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.