The latest officially reported population of Spain was 48,848,840 in 2024 vs 1,368,333 people in Trinidad and Tobago in 2024. In 2026, based on the adjusted UN estimation, the current Spain's population is 48,806,901 people compared to 1,374,840 in Trinidad and Tobago.
Population statistics:
- Spain's population is 35.5 times bigger than Trinidad and Tobago's.
- Spain is ranked the 32nd most populous country in the world, while Trinidad and Tobago is the 154th.
- The countries together account for 0.61% of the world: 0.59% for Spain vs 0.02% for Trinidad and Tobago.
- For the last 10 years, Spain has had an average growth rate of +0.43% per year vs +0.19% in Trinidad and Tobago.
- Since 2006, the population of Spain has increased from 44.4M people to 48.8M (9.93% growth), while Trinidad and Tobago has grown from 1.3M to 1.37M (5.92% growth).
Spain vs Trinidad and Tobago: population by year and forecast
| Year | Population | |
|---|---|---|
Spain
|
Trinidad
|
|
| 2100 | 33,862,981 | 820,139 |
| 2099 | 34,039,965 | 827,732 |
| 2098 | 34,215,187 | 835,344 |
| 2097 | 34,387,116 | 843,011 |
| 2096 | 34,552,002 | 850,741 |
| 2095 | 34,719,411 | 858,556 |
| 2094 | 34,882,039 | 866,373 |
| 2093 | 35,044,043 | 874,273 |
| 2092 | 35,204,657 | 882,213 |
| 2091 | 35,366,895 | 890,266 |
| 2090 | 35,535,838 | 898,378 |
| 2089 | 35,707,942 | 906,601 |
| 2088 | 35,877,681 | 914,872 |
| 2087 | 36,043,209 | 923,272 |
| 2086 | 36,210,710 | 931,804 |
| 2085 | 36,386,207 | 940,463 |
| 2084 | 36,564,622 | 949,270 |
| 2083 | 36,749,680 | 958,273 |
| 2082 | 36,936,644 | 967,427 |
| 2081 | 37,133,976 | 976,795 |
| 2080 | 37,337,517 | 986,272 |
| 2079 | 37,551,557 | 995,976 |
| 2078 | 37,771,135 | 1,005,824 |
| 2077 | 38,002,963 | 1,015,872 |
| 2076 | 38,249,247 | 1,026,025 |
| 2075 | 38,506,040 | 1,036,315 |
| 2074 | 38,777,715 | 1,046,695 |
| 2073 | 39,056,249 | 1,057,138 |
| 2072 | 39,348,447 | 1,067,706 |
| 2071 | 39,642,346 | 1,078,279 |
| 2070 | 39,949,413 | 1,088,883 |
| 2069 | 40,256,590 | 1,099,489 |
| 2068 | 40,575,543 | 1,110,059 |
| 2067 | 40,893,798 | 1,120,501 |
| 2066 | 41,218,263 | 1,130,882 |
| 2065 | 41,543,254 | 1,141,203 |
| 2064 | 41,878,338 | 1,151,388 |
| 2063 | 42,208,320 | 1,161,394 |
| 2062 | 42,542,893 | 1,171,232 |
| 2061 | 42,874,096 | 1,180,918 |
| 2060 | 43,191,452 | 1,190,417 |
| 2059 | 43,506,737 | 1,199,770 |
| 2058 | 43,809,907 | 1,208,904 |
| 2057 | 44,112,668 | 1,217,922 |
| 2056 | 44,415,689 | 1,226,725 |
| 2055 | 44,691,749 | 1,235,387 |
| 2054 | 44,958,971 | 1,243,896 |
| 2053 | 45,223,225 | 1,252,160 |
| 2052 | 45,470,541 | 1,260,260 |
| 2051 | 45,695,307 | 1,268,194 |
| 2050 | 45,911,520 | 1,275,900 |
| 2049 | 46,127,777 | 1,283,457 |
| 2048 | 46,322,244 | 1,290,793 |
| 2047 | 46,510,152 | 1,297,947 |
| 2046 | 46,687,914 | 1,304,843 |
| 2045 | 46,858,778 | 1,311,560 |
| 2044 | 47,016,278 | 1,318,015 |
| 2043 | 47,158,325 | 1,324,249 |
| 2042 | 47,301,091 | 1,330,180 |
| 2041 | 47,434,593 | 1,335,843 |
| 2040 | 47,563,236 | 1,341,188 |
| 2039 | 47,685,343 | 1,346,239 |
| 2038 | 47,798,797 | 1,350,921 |
| 2037 | 47,910,899 | 1,355,297 |
| 2036 | 48,020,350 | 1,359,322 |
| 2035 | 48,124,430 | 1,362,986 |
| 2034 | 48,220,051 | 1,366,278 |
| 2033 | 48,311,842 | 1,369,125 |
| 2032 | 48,402,470 | 1,371,607 |
| 2031 | 48,495,278 | 1,373,561 |
| 2030 | 48,579,920 | 1,375,038 |
| 2029 | 48,648,699 | 1,376,018 |
| 2028 | 48,707,969 | 1,376,314 |
| 2027 | 48,758,200 | 1,375,856 |
| 2026 | 48,806,901 | 1,374,464 |
| 2025 | 48,838,057 | 1,372,016 |
| 2024 | 48,848,840 | 1,368,333 |
| 2023 | 48,352,528 | 1,367,510 |
| 2022 | 47,786,102 | 1,365,805 |
| 2021 | 47,443,821 | 1,367,558 |
| 2020 | 47,359,424 | 1,366,725 |
| 2019 | 47,118,501 | 1,363,985 |
| 2018 | 46,782,011 | 1,359,193 |
| 2017 | 46,571,232 | 1,356,633 |
| 2016 | 46,458,139 | 1,353,895 |
| 2015 | 46,422,303 | 1,349,667 |
| 2014 | 46,460,733 | 1,345,343 |
| 2013 | 46,604,197 | 1,340,557 |
| 2012 | 46,773,055 | 1,335,194 |
| 2011 | 46,742,697 | 1,328,019 |
| 2010 | 46,576,897 | 1,317,714 |
| 2009 | 46,362,946 | 1,310,106 |
| 2008 | 45,954,106 | 1,308,587 |
| 2007 | 45,226,803 | 1,303,188 |
| 2006 | 44,397,319 | 1,297,944 |
| 2005 | 43,653,155 | 1,294,494 |
| 2004 | 42,921,895 | 1,345,380 |
| 2003 | 42,187,645 | 1,338,709 |
| 2002 | 41,431,558 | 1,332,011 |
| 2001 | 40,850,412 | 1,325,567 |
| 2000 | 40,567,864 | 1,319,774 |
| 1999 | 40,386,875 | 1,314,708 |
| 1998 | 40,223,509 | 1,310,225 |
| 1997 | 40,057,389 | 1,305,836 |
| 1996 | 39,889,852 | 1,300,928 |
| 1995 | 39,724,050 | 1,295,169 |
| 1994 | 39,549,108 | 1,288,341 |
| 1993 | 39,361,262 | 1,280,466 |
| 1992 | 39,157,685 | 1,271,674 |
| 1991 | 38,966,376 | 1,262,171 |
| 1990 | 38,867,322 | 1,252,208 |
| 1989 | 38,827,764 | 1,241,600 |
| 1988 | 38,766,939 | 1,230,069 |
| 1987 | 38,684,815 | 1,217,364 |
| 1986 | 38,584,624 | 1,203,124 |
| 1985 | 38,469,512 | 1,187,366 |
| 1984 | 38,330,364 | 1,172,984 |
| 1983 | 38,171,525 | 1,160,534 |
| 1982 | 37,986,012 | 1,147,927 |
| 1981 | 37,758,631 | 1,135,132 |
| 1980 | 37,491,165 | 1,121,744 |
| 1979 | 37,191,330 | 1,107,639 |
| 1978 | 36,864,898 | 1,093,380 |
| 1977 | 36,511,638 | 1,079,554 |
| 1976 | 36,137,812 | 1,066,311 |
| 1975 | 35,757,900 | 1,053,469 |
| 1974 | 35,373,335 | 1,040,761 |
| 1973 | 34,988,947 | 1,027,851 |
| 1972 | 34,604,469 | 1,014,921 |
| 1971 | 34,224,490 | 1,002,585 |
| 1970 | 33,814,531 | 991,471 |
| 1969 | 33,441,054 | 980,706 |
| 1968 | 33,113,134 | 969,006 |
| 1967 | 32,682,947 | 956,418 |
| 1966 | 32,283,194 | 942,937 |
| 1965 | 31,954,292 | 928,425 |
| 1964 | 31,609,195 | 912,963 |
| 1963 | 31,296,651 | 896,804 |
| 1962 | 31,023,366 | 880,194 |
| 1961 | 30,739,250 | 863,144 |
| 1960 | 30,455,000 | 844,943 |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).
GeoRank.org/population/spain/trinidad-and-tobago | CC BY 
From 2006 to 2016, the population of Spain increased by 2,060,820 people (a 4.64% growth), while Trinidad and Tobago gained 55,951 people (a 4.31% growth).
For the next 10 years, from 2016 to 2026, Spain gained 2,348,762 people (a 5.06% growth), while Trinidad and Tobago's population increased by 20,945 people (a 1.55% growth).
Spain was ranked 28th most populous country in 2006 and is 32nd in 2026. Trinidad and Tobago was ranked 150th in 2006 and ranked 154th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Spain's population will shrink by 5.93% to 45,911,520 people with a rank change from 32nd to 47th. The population of Trinidad and Tobago will decrease by 7.2% to 1,275,900 people and rank change from 154th to 158th.
Trinidad and Tobago is projected to reach its peak in 2028 at 1.38M people, while Spain's population already peaked in 2024 at 48.8M people and is projected to decrease to 33.9M people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Spain
|
Trinidad
|
|
| 2100 | -0.52% | -0.92% |
| 2099 | -0.51% | -0.91% |
| 2098 | -0.5% | -0.91% |
| 2097 | -0.48% | -0.91% |
| 2096 | -0.48% | -0.91% |
| 2095 | -0.47% | -0.9% |
| 2094 | -0.46% | -0.9% |
| 2093 | -0.46% | -0.9% |
| 2092 | -0.46% | -0.9% |
| 2091 | -0.48% | -0.9% |
| 2090 | -0.48% | -0.91% |
| 2089 | -0.47% | -0.9% |
| 2088 | -0.46% | -0.91% |
| 2087 | -0.46% | -0.92% |
| 2086 | -0.48% | -0.92% |
| 2085 | -0.49% | -0.93% |
| 2084 | -0.5% | -0.94% |
| 2083 | -0.51% | -0.95% |
| 2082 | -0.53% | -0.96% |
| 2081 | -0.55% | -0.96% |
| 2080 | -0.57% | -0.97% |
| 2079 | -0.58% | -0.98% |
| 2078 | -0.61% | -0.99% |
| 2077 | -0.64% | -0.99% |
| 2076 | -0.67% | -0.99% |
| 2075 | -0.7% | -0.99% |
| 2074 | -0.71% | -0.99% |
| 2073 | -0.74% | -0.99% |
| 2072 | -0.74% | -0.98% |
| 2071 | -0.77% | -0.97% |
| 2070 | -0.76% | -0.96% |
| 2069 | -0.79% | -0.95% |
| 2068 | -0.78% | -0.93% |
| 2067 | -0.79% | -0.92% |
| 2066 | -0.78% | -0.9% |
| 2065 | -0.8% | -0.88% |
| 2064 | -0.78% | -0.86% |
| 2063 | -0.79% | -0.84% |
| 2062 | -0.77% | -0.82% |
| 2061 | -0.73% | -0.8% |
| 2060 | -0.72% | -0.78% |
| 2059 | -0.69% | -0.76% |
| 2058 | -0.69% | -0.74% |
| 2057 | -0.68% | -0.72% |
| 2056 | -0.62% | -0.7% |
| 2055 | -0.59% | -0.68% |
| 2054 | -0.58% | -0.66% |
| 2053 | -0.54% | -0.64% |
| 2052 | -0.49% | -0.63% |
| 2051 | -0.47% | -0.6% |
| 2050 | -0.47% | -0.59% |
| 2049 | -0.42% | -0.57% |
| 2048 | -0.4% | -0.55% |
| 2047 | -0.38% | -0.53% |
| 2046 | -0.36% | -0.51% |
| 2045 | -0.33% | -0.49% |
| 2044 | -0.3% | -0.47% |
| 2043 | -0.3% | -0.45% |
| 2042 | -0.28% | -0.42% |
| 2041 | -0.27% | -0.4% |
| 2040 | -0.26% | -0.38% |
| 2039 | -0.24% | -0.35% |
| 2038 | -0.23% | -0.32% |
| 2037 | -0.23% | -0.3% |
| 2036 | -0.22% | -0.27% |
| 2035 | -0.2% | -0.24% |
| 2034 | -0.19% | -0.21% |
| 2033 | -0.19% | -0.18% |
| 2032 | -0.19% | -0.14% |
| 2031 | -0.17% | -0.11% |
| 2030 | -0.14% | -0.07% |
| 2029 | -0.12% | -0.02% |
| 2028 | -0.1% | 0.03% |
| 2027 | -0.1% | 0.1% |
| 2026 | -0.06% | 0.18% |
| 2025 | -0.02% | 0.27% |
| 2024 | 1.03% | 0.06% |
| 2023 | 1.19% | 0.12% |
| 2022 | 0.72% | -0.13% |
| 2021 | 0.18% | 0.06% |
| 2020 | 0.51% | 0.2% |
| 2019 | 0.72% | 0.35% |
| 2018 | 0.45% | 0.19% |
| 2017 | 0.24% | 0.2% |
| 2016 | 0.08% | 0.31% |
| 2015 | -0.08% | 0.32% |
| 2014 | -0.31% | 0.36% |
| 2013 | -0.36% | 0.4% |
| 2012 | 0.06% | 0.54% |
| 2011 | 0.36% | 0.78% |
| 2010 | 0.46% | 0.58% |
| 2009 | 0.89% | 0.12% |
| 2008 | 1.61% | 0.41% |
| 2007 | 1.87% | 0.4% |
| 2006 | 1.7% | 0.27% |
| 2005 | 1.7% | -3.78% |
| 2004 | 1.74% | 0.5% |
| 2003 | 1.82% | 0.5% |
| 2002 | 1.42% | 0.49% |
| 2001 | 0.7% | 0.44% |
| 2000 | 0.45% | 0.39% |
| 1999 | 0.41% | 0.34% |
| 1998 | 0.41% | 0.34% |
| 1997 | 0.42% | 0.38% |
| 1996 | 0.42% | 0.44% |
| 1995 | 0.44% | 0.53% |
| 1994 | 0.48% | 0.62% |
| 1993 | 0.52% | 0.69% |
| 1992 | 0.49% | 0.75% |
| 1991 | 0.25% | 0.8% |
| 1990 | 0.1% | 0.85% |
| 1989 | 0.16% | 0.94% |
| 1988 | 0.21% | 1.04% |
| 1987 | 0.26% | 1.18% |
| 1986 | 0.3% | 1.33% |
| 1985 | 0.36% | 1.23% |
| 1984 | 0.42% | 1.07% |
| 1983 | 0.49% | 1.1% |
| 1982 | 0.6% | 1.13% |
| 1981 | 0.71% | 1.19% |
| 1980 | 0.81% | 1.27% |
| 1979 | 0.89% | 1.3% |
| 1978 | 0.97% | 1.28% |
| 1977 | 1.03% | 1.24% |
| 1976 | 1.06% | 1.22% |
| 1975 | 1.09% | 1.22% |
| 1974 | 1.1% | 1.26% |
| 1973 | 1.11% | 1.27% |
| 1972 | 1.11% | 1.23% |
| 1971 | 1.21% | 1.12% |
| 1970 | 1.12% | 1.1% |
| 1969 | 0.99% | 1.21% |
| 1968 | 1.32% | 1.32% |
| 1967 | 1.24% | 1.43% |
| 1966 | 1.03% | 1.56% |
| 1965 | 1.09% | 1.69% |
| 1964 | 1% | 1.8% |
| 1963 | 0.88% | 1.89% |
| 1962 | 0.92% | 1.98% |
| 1961 | 0.93% | 2.15% |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).
GeoRank.org/population/spain/trinidad-and-tobago | CC BY
In 2024, the population of Spain grew by 1.03%, while Trinidad and Tobago's population grew by 0.06%.
Live population counters
|
Spain
|
Trinidad
|
|
|---|---|---|
| Current population |
48806901
|
1374840
|
| Population rank | 32/197 | 154/197 |
| Percent of world population | 0.59% | 0.02% |
| One net population change |
1.06 minutes
|
10.6 hours
|
| One birth every |
1.62 minutes
|
35.9 minutes
|
| One death every |
1.21 minutes
|
45.9 minutes
|
| Daily growth/decline | +1,360 | +2 |
| Annual growth/decline | +496,312 | +823 |
| Annual growth/decline rate | +1.03% | +0.06% |
| Population growth rate rank | 100/197 | 161/197 |
| One migration net change every |
5.45 minutes
|
12.7 hours
|
| Annual migration change | +96,630 | +691 |
| Net migration rank | 17/196 | 67/196 |
| Foreign-born residents | 8,870,527 | 113,478 |
| Foreign-born residents rank | 6/195 | 128/195 |
| Foreign-born share of population | 18.5% | 7.5% |
| Foreign-born share rank | 32/195 | 78/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Spain
|
Trinidad
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 96,630 | - | 691 |
| 2024 | - | 111,674 | - | 1,334 |
| 2023 | -111,211 | 119,099 | 3,200 | 2,126 |
| 2022 | -133,801 | 299,779 | 3,773 | 4,247 |
| 2021 | -113,865 | 144,385 | 2,091 | 5,749 |
| 2020 | -151,551 | 236,854 | 4,558 | 427 |
| 2019 | -56,542 | 464,783 | 5,647 | -19,251 |
| 2018 | -56,139 | 337,467 | 5,869 | 35,502 |
| 2017 | -32,600 | 201,135 | 6,779 | 1,445 |
| 2016 | 0 | 106,474 | 7,436 | -86 |
| 2015 | -4,642 | -1,979 | 7,963 | -575 |
| 2014 | 32,522 | -97,870 | 8,571 | -799 |
| 2013 | 37,284 | -250,741 | 9,020 | -796 |
| 2012 | 51,450 | -153,486 | 9,376 | -880 |
| 2011 | 84,137 | 60,761 | 9,601 | -1,410 |
| 2010 | 102,469 | 69,406 | 9,698 | -2,230 |
| 2009 | 106,635 | 129,557 | 9,769 | -3,056 |
| 2008 | 133,267 | 434,135 | 9,872 | -3,624 |
| 2007 | 108,545 | 772,317 | 9,939 | -3,731 |
| 2006 | 110,994 | 659,720 | 9,889 | -3,684 |
| 2005 | 78,576 | 629,803 | 9,822 | -3,595 |
| 2004 | 85,844 | 661,158 | 10,149 | -3,504 |
| 2003 | 54,844 | 658,428 | 10,169 | -3,472 |
| 2002 | 53,861 | 737,880 | 10,316 | -3,613 |
| 2001 | 44,936 | 181,307 | 10,438 | -4,252 |
| 2000 | 36,512 | 176,269 | 10,588 | -5,185 |
| 1999 | 8,077 | 178,559 | 10,821 | -6,103 |
| 1998 | 4,022 | 182,926 | 10,964 | -6,730 |
| 1997 | 20,028 | 165,345 | 11,405 | -6,865 |
| 1996 | 11,967 | 162,704 | 12,101 | -6,827 |
| 1995 | 15,889 | 162,434 | 12,971 | -6,723 |
| 1994 | 31,639 | 160,407 | 14,032 | -6,615 |
| 1993 | 47,234 | 160,907 | 14,878 | -6,554 |
| 1992 | 62,652 | 177,544 | 15,910 | -6,650 |
| 1991 | 58,450 | 122,841 | 16,903 | -7,149 |
| 1990 | 66,075 | -30,684 | 18,052 | -7,878 |
| 1989 | 81,538 | -25,892 | 19,636 | -8,588 |
| 1988 | 100,794 | -17,663 | 21,028 | -9,023 |
| 1987 | 116,054 | -12,681 | 22,398 | -9,002 |
| 1986 | 131,188 | -13,540 | 23,705 | -8,620 |
| 1985 | 146,184 | -589 | 24,487 | -8,051 |
| 1984 | 172,487 | 2,754 | 24,738 | -12,413 |
| 1983 | 183,223 | 1,241 | 25,118 | -12,544 |
| 1982 | 231,714 | -7,384 | 25,181 | -12,529 |
| 1981 | 237,879 | 2,563 | 25,015 | -12,086 |
| 1980 | 281,184 | 20,166 | 24,557 | -10,709 |
| 1979 | 312,407 | -5,929 | 23,475 | -9,106 |
| 1978 | 339,157 | -2,504 | 22,538 | -8,397 |
| 1977 | 361,465 | -1,332 | 21,660 | -8,154 |
| 1976 | 375,834 | 2,804 | 20,875 | -7,895 |
| 1975 | 371,882 | -218 | 20,468 | -7,768 |
| 1974 | 396,182 | 105,838 | 20,412 | -7,683 |
| 1973 | 374,381 | 8,624 | 20,617 | -7,524 |
| 1972 | 391,030 | 7,935 | 20,116 | -7,346 |
| 1971 | 369,625 | 7,363 | 19,400 | -7,499 |
| 1970 | 378,723 | -60,580 | 19,074 | -8,751 |
| 1969 | 367,851 | -49,956 | 19,652 | -8,449 |
| 1968 | 387,423 | -46,088 | 20,849 | -8,647 |
| 1967 | 402,001 | -42,344 | 21,992 | -9,008 |
| 1966 | 397,084 | -41,467 | 23,228 | -9,254 |
| 1965 | 405,819 | -42,476 | 24,349 | -9,301 |
| 1964 | 429,885 | -41,461 | 25,065 | -9,193 |
| 1963 | 394,338 | -44,446 | 25,507 | -9,067 |
| 1962 | 384,690 | -45,211 | 25,763 | -8,982 |
| 1961 | 396,537 | -46,517 | 25,518 | -8,200 |
| 1960 | 398,960 | -154,869 | 24,766 | -5,671 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).
GeoRank.org/population/spain/trinidad-and-tobago | CC BY
Over the last 10 years, 25.8% of the population change in Spain is from natural causes (a loss of 627,829 people) and 74.2% is from migration (a gain of 1,810,127 people). In Trinidad and Tobago 66% is from natural causes (a gain of 55,887 people) and 34% is from migration (a gain of 28,785 people).
As of 2024, 8,870,527 residents or 18.5% of the population were not native-born in Spain, compared to 113,478 people or 7.5% in Trinidad and Tobago.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Spain and Trinidad and Tobago
|
Spain
|
Trinidad
|
|
|---|---|---|
| Life expectancy | 84.1 years | 73.9 years |
| Average age | 44.7 years | 38.2 years |
| Median age | 46.4 years | 38.2 years |
| Male:Female ratio | 49.1:50.9 | 49.4:50.6 |
| Fertility rate | 1.12 births per woman | 1.53 births per woman |
| Population density | 253 ppl/mi² | 694 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).
GeoRank.org/population/spain/trinidad-and-tobago | 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 2026-04-06)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
- U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
- Wikidata (2026, retrieved 2026-02-08)
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.