The latest officially reported population of Singapore was 6,036,860 in 2024 vs 21,314,956 people in Zambia in 2024. In 2026, based on the adjusted UN estimation, the current Singapore's population is 6,125,852 people compared to 22,697,916 in Zambia.
Population statistics:
- Zambia's population is 3.71 times bigger than Singapore's.
- Singapore is ranked the 113th most populous country in the world, while Zambia is the 62nd.
- The countries together account for 0.35% of the world: 0.07% for Singapore vs 0.27% for Zambia.
- For the last 10 years, Singapore has had an average growth rate of +1.04% per year vs +3% in Zambia.
- Since 2006, the population of Singapore has increased from 4.4M people to 6.13M (39.2% growth), while Zambia has grown from 12.1M to 22.7M (87.1% growth).
Singapore vs Zambia: population by year and forecast
| Year | Population | |
|---|---|---|
Singapore
|
Zambia
|
|
| 2100 | 4,344,248 | 65,217,429 |
| 2099 | 4,387,645 | 64,871,545 |
| 2098 | 4,435,189 | 64,515,891 |
| 2097 | 4,483,484 | 64,148,736 |
| 2096 | 4,533,994 | 63,777,313 |
| 2095 | 4,585,243 | 63,393,169 |
| 2094 | 4,639,568 | 62,992,652 |
| 2093 | 4,692,749 | 62,590,327 |
| 2092 | 4,745,364 | 62,175,930 |
| 2091 | 4,802,089 | 61,750,591 |
| 2090 | 4,859,572 | 61,321,399 |
| 2089 | 4,919,853 | 60,880,148 |
| 2088 | 4,977,701 | 60,434,676 |
| 2087 | 5,036,662 | 59,970,107 |
| 2086 | 5,096,772 | 59,499,234 |
| 2085 | 5,155,480 | 59,023,040 |
| 2084 | 5,212,381 | 58,535,857 |
| 2083 | 5,269,612 | 58,040,512 |
| 2082 | 5,327,281 | 57,538,672 |
| 2081 | 5,383,608 | 57,027,491 |
| 2080 | 5,438,023 | 56,506,421 |
| 2079 | 5,491,695 | 55,983,242 |
| 2078 | 5,541,781 | 55,449,777 |
| 2077 | 5,589,429 | 54,906,771 |
| 2076 | 5,632,686 | 54,361,075 |
| 2075 | 5,679,862 | 53,806,856 |
| 2074 | 5,725,351 | 53,246,777 |
| 2073 | 5,764,008 | 52,677,348 |
| 2072 | 5,799,655 | 52,101,139 |
| 2071 | 5,833,262 | 51,519,691 |
| 2070 | 5,864,115 | 50,931,614 |
| 2069 | 5,896,709 | 50,334,700 |
| 2068 | 5,927,631 | 49,737,479 |
| 2067 | 5,955,955 | 49,135,488 |
| 2066 | 5,988,826 | 48,530,443 |
| 2065 | 6,020,244 | 47,918,592 |
| 2064 | 6,046,805 | 47,299,740 |
| 2063 | 6,069,231 | 46,677,439 |
| 2062 | 6,093,782 | 46,048,819 |
| 2061 | 6,116,847 | 45,416,657 |
| 2060 | 6,142,295 | 44,777,347 |
| 2059 | 6,163,191 | 44,137,306 |
| 2058 | 6,185,611 | 43,494,451 |
| 2057 | 6,203,303 | 42,851,923 |
| 2056 | 6,221,491 | 42,206,898 |
| 2055 | 6,240,206 | 41,558,284 |
| 2054 | 6,261,488 | 40,906,492 |
| 2053 | 6,277,678 | 40,255,629 |
| 2052 | 6,290,046 | 39,603,888 |
| 2051 | 6,307,270 | 38,949,958 |
| 2050 | 6,325,698 | 38,294,607 |
| 2049 | 6,342,616 | 37,634,194 |
| 2048 | 6,355,818 | 36,971,309 |
| 2047 | 6,373,684 | 36,309,749 |
| 2046 | 6,387,901 | 35,645,868 |
| 2045 | 6,399,811 | 34,981,812 |
| 2044 | 6,412,802 | 34,316,981 |
| 2043 | 6,420,804 | 33,652,420 |
| 2042 | 6,427,555 | 32,990,657 |
| 2041 | 6,433,153 | 32,329,447 |
| 2040 | 6,434,727 | 31,664,262 |
| 2039 | 6,431,367 | 31,001,305 |
| 2038 | 6,422,540 | 30,335,662 |
| 2037 | 6,410,923 | 29,668,561 |
| 2036 | 6,398,937 | 29,000,264 |
| 2035 | 6,382,637 | 28,333,498 |
| 2034 | 6,360,610 | 27,671,195 |
| 2033 | 6,333,556 | 27,011,974 |
| 2032 | 6,306,749 | 26,356,580 |
| 2031 | 6,277,847 | 25,702,812 |
| 2030 | 6,250,608 | 25,055,216 |
| 2029 | 6,221,161 | 24,414,405 |
| 2028 | 6,186,754 | 23,780,809 |
| 2027 | 6,150,947 | 23,151,479 |
| 2026 | 6,116,548 | 22,529,742 |
| 2025 | 6,078,250 | 21,918,187 |
| 2024 | 6,036,860 | 21,314,956 |
| 2023 | 5,917,648 | 20,723,965 |
| 2022 | 5,637,022 | 20,152,938 |
| 2021 | 5,453,566 | 19,603,607 |
| 2020 | 5,685,807 | 19,059,395 |
| 2019 | 5,703,569 | 18,513,839 |
| 2018 | 5,638,676 | 17,973,569 |
| 2017 | 5,612,253 | 17,441,320 |
| 2016 | 5,607,283 | 16,914,423 |
| 2015 | 5,535,002 | 16,399,089 |
| 2014 | 5,469,724 | 15,895,315 |
| 2013 | 5,399,162 | 15,398,997 |
| 2012 | 5,312,437 | 14,913,629 |
| 2011 | 5,183,688 | 14,437,796 |
| 2010 | 5,076,732 | 13,965,594 |
| 2009 | 4,987,573 | 13,490,389 |
| 2008 | 4,839,396 | 13,021,324 |
| 2007 | 4,588,599 | 12,565,085 |
| 2006 | 4,401,365 | 12,129,553 |
| 2005 | 4,265,762 | 11,718,819 |
| 2004 | 4,166,664 | 11,338,198 |
| 2003 | 4,114,826 | 10,983,595 |
| 2002 | 4,175,950 | 10,647,949 |
| 2001 | 4,138,012 | 10,325,185 |
| 2000 | 4,027,887 | 10,017,631 |
| 1999 | 3,958,723 | 9,740,005 |
| 1998 | 3,927,213 | 9,482,408 |
| 1997 | 3,796,038 | 9,237,063 |
| 1996 | 3,670,704 | 9,004,053 |
| 1995 | 3,524,506 | 8,785,763 |
| 1994 | 3,419,048 | 8,576,269 |
| 1993 | 3,313,471 | 8,373,921 |
| 1992 | 3,230,698 | 8,176,680 |
| 1991 | 3,135,083 | 7,981,650 |
| 1990 | 3,047,132 | 7,786,169 |
| 1989 | 2,930,901 | 7,589,216 |
| 1988 | 2,846,108 | 7,391,440 |
| 1987 | 2,774,789 | 7,191,282 |
| 1986 | 2,733,373 | 6,986,471 |
| 1985 | 2,735,957 | 6,780,953 |
| 1984 | 2,732,221 | 6,580,490 |
| 1983 | 2,681,061 | 6,381,038 |
| 1982 | 2,646,466 | 6,178,637 |
| 1981 | 2,532,835 | 5,983,289 |
| 1980 | 2,413,945 | 5,802,833 |
| 1979 | 2,383,500 | 5,631,728 |
| 1978 | 2,353,600 | 5,465,374 |
| 1977 | 2,325,300 | 5,302,480 |
| 1976 | 2,293,300 | 5,143,842 |
| 1975 | 2,262,600 | 4,990,086 |
| 1974 | 2,229,800 | 4,842,746 |
| 1973 | 2,193,000 | 4,702,693 |
| 1972 | 2,152,400 | 4,569,309 |
| 1971 | 2,112,900 | 4,442,525 |
| 1970 | 2,074,507 | 4,321,718 |
| 1969 | 2,042,500 | 4,197,116 |
| 1968 | 2,012,000 | 4,065,593 |
| 1967 | 1,977,600 | 3,936,343 |
| 1966 | 1,934,400 | 3,812,003 |
| 1965 | 1,886,900 | 3,692,086 |
| 1964 | 1,841,600 | 3,577,017 |
| 1963 | 1,795,000 | 3,465,907 |
| 1962 | 1,750,200 | 3,358,099 |
| 1961 | 1,702,400 | 3,254,086 |
| 1960 | 1,646,400 | 3,153,729 |
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/singapore/zambia | CC BY 
From 2006 to 2016, the population of Singapore increased by 1,205,918 people (a 27.4% growth), while Zambia gained 4,784,870 people (a 39.4% growth).
For the next 10 years, from 2016 to 2026, Singapore gained 518,569 people (a 9.25% growth), while Zambia's population increased by 5,783,493 people (a 34.2% growth).
Singapore was ranked 117th most populous country in 2006 and is 113th in 2026. Zambia was ranked 71st in 2006 and ranked 62nd now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Singapore's population will grow by 3.26% to 6,325,698 people with a rank change from 113th to 118th. The population of Zambia will increase by 68.7% to 38,294,607 people and rank change from 62nd to 54th.
Singapore is projected to reach its peak in 2040 at 6.43M people compared to the peak of 65.2M people in 2100 for Zambia.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Singapore
|
Zambia
|
|
| 2100 | -0.99% | 0.53% |
| 2099 | -1.07% | 0.55% |
| 2098 | -1.08% | 0.57% |
| 2097 | -1.11% | 0.58% |
| 2096 | -1.12% | 0.61% |
| 2095 | -1.17% | 0.64% |
| 2094 | -1.13% | 0.64% |
| 2093 | -1.11% | 0.67% |
| 2092 | -1.18% | 0.69% |
| 2091 | -1.18% | 0.7% |
| 2090 | -1.23% | 0.72% |
| 2089 | -1.16% | 0.74% |
| 2088 | -1.17% | 0.77% |
| 2087 | -1.18% | 0.79% |
| 2086 | -1.14% | 0.81% |
| 2085 | -1.09% | 0.83% |
| 2084 | -1.09% | 0.85% |
| 2083 | -1.08% | 0.87% |
| 2082 | -1.05% | 0.9% |
| 2081 | -1% | 0.92% |
| 2080 | -0.98% | 0.93% |
| 2079 | -0.9% | 0.96% |
| 2078 | -0.85% | 0.99% |
| 2077 | -0.77% | 1% |
| 2076 | -0.83% | 1.03% |
| 2075 | -0.79% | 1.05% |
| 2074 | -0.67% | 1.08% |
| 2073 | -0.61% | 1.11% |
| 2072 | -0.58% | 1.13% |
| 2071 | -0.53% | 1.15% |
| 2070 | -0.55% | 1.19% |
| 2069 | -0.52% | 1.2% |
| 2068 | -0.48% | 1.23% |
| 2067 | -0.55% | 1.25% |
| 2066 | -0.52% | 1.28% |
| 2065 | -0.44% | 1.31% |
| 2064 | -0.37% | 1.33% |
| 2063 | -0.4% | 1.37% |
| 2062 | -0.38% | 1.39% |
| 2061 | -0.41% | 1.43% |
| 2060 | -0.34% | 1.45% |
| 2059 | -0.36% | 1.48% |
| 2058 | -0.29% | 1.5% |
| 2057 | -0.29% | 1.53% |
| 2056 | -0.3% | 1.56% |
| 2055 | -0.34% | 1.59% |
| 2054 | -0.26% | 1.62% |
| 2053 | -0.2% | 1.65% |
| 2052 | -0.27% | 1.68% |
| 2051 | -0.29% | 1.71% |
| 2050 | -0.27% | 1.75% |
| 2049 | -0.21% | 1.79% |
| 2048 | -0.28% | 1.82% |
| 2047 | -0.22% | 1.86% |
| 2046 | -0.19% | 1.9% |
| 2045 | -0.2% | 1.94% |
| 2044 | -0.12% | 1.97% |
| 2043 | -0.11% | 2.01% |
| 2042 | -0.09% | 2.05% |
| 2041 | -0.02% | 2.1% |
| 2040 | 0.05% | 2.14% |
| 2039 | 0.14% | 2.19% |
| 2038 | 0.18% | 2.25% |
| 2037 | 0.19% | 2.3% |
| 2036 | 0.26% | 2.35% |
| 2035 | 0.35% | 2.39% |
| 2034 | 0.43% | 2.44% |
| 2033 | 0.43% | 2.49% |
| 2032 | 0.46% | 2.54% |
| 2031 | 0.44% | 2.58% |
| 2030 | 0.47% | 2.62% |
| 2029 | 0.56% | 2.66% |
| 2028 | 0.58% | 2.72% |
| 2027 | 0.56% | 2.76% |
| 2026 | 0.63% | 2.79% |
| 2025 | 0.69% | 2.83% |
| 2024 | 2.01% | 2.85% |
| 2023 | 4.98% | 2.83% |
| 2022 | 3.36% | 2.8% |
| 2021 | -4.08% | 2.86% |
| 2020 | -0.31% | 2.95% |
| 2019 | 1.15% | 3.01% |
| 2018 | 0.47% | 3.05% |
| 2017 | 0.09% | 3.12% |
| 2016 | 1.31% | 3.14% |
| 2015 | 1.19% | 3.17% |
| 2014 | 1.31% | 3.22% |
| 2013 | 1.63% | 3.25% |
| 2012 | 2.48% | 3.3% |
| 2011 | 2.11% | 3.38% |
| 2010 | 1.79% | 3.52% |
| 2009 | 3.06% | 3.6% |
| 2008 | 5.47% | 3.63% |
| 2007 | 4.25% | 3.59% |
| 2006 | 3.18% | 3.5% |
| 2005 | 2.38% | 3.36% |
| 2004 | 1.26% | 3.23% |
| 2003 | -1.46% | 3.15% |
| 2002 | 0.92% | 3.13% |
| 2001 | 2.73% | 3.07% |
| 2000 | 1.75% | 2.85% |
| 1999 | 0.8% | 2.72% |
| 1998 | 3.46% | 2.66% |
| 1997 | 3.41% | 2.59% |
| 1996 | 4.15% | 2.48% |
| 1995 | 3.08% | 2.44% |
| 1994 | 3.19% | 2.42% |
| 1993 | 2.56% | 2.41% |
| 1992 | 3.05% | 2.44% |
| 1991 | 2.89% | 2.51% |
| 1990 | 3.97% | 2.6% |
| 1989 | 2.98% | 2.68% |
| 1988 | 2.57% | 2.78% |
| 1987 | 1.52% | 2.93% |
| 1986 | -0.09% | 3.03% |
| 1985 | 0.14% | 3.05% |
| 1984 | 1.91% | 3.13% |
| 1983 | 1.31% | 3.28% |
| 1982 | 4.49% | 3.26% |
| 1981 | 4.93% | 3.11% |
| 1980 | 1.28% | 3.04% |
| 1979 | 1.27% | 3.04% |
| 1978 | 1.22% | 3.07% |
| 1977 | 1.4% | 3.08% |
| 1976 | 1.36% | 3.08% |
| 1975 | 1.47% | 3.04% |
| 1974 | 1.68% | 2.98% |
| 1973 | 1.89% | 2.92% |
| 1972 | 1.87% | 2.85% |
| 1971 | 1.85% | 2.8% |
| 1970 | 1.57% | 2.97% |
| 1969 | 1.52% | 3.24% |
| 1968 | 1.74% | 3.28% |
| 1967 | 2.23% | 3.26% |
| 1966 | 2.52% | 3.25% |
| 1965 | 2.46% | 3.22% |
| 1964 | 2.6% | 3.21% |
| 1963 | 2.56% | 3.21% |
| 1962 | 2.81% | 3.2% |
| 1961 | 3.4% | 3.18% |
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/singapore/zambia | CC BY
In 2024, the population of Singapore grew by 2.01%, while Zambia's population grew by 2.85%.
Live population counters
|
Singapore
|
Zambia
|
|
|---|---|---|
| Current population |
6125852
|
22697916
|
| Population rank | 113/197 | 62/197 |
| Percent of world population | 0.07% | 0.27% |
| One net population change |
4.41 minutes
|
53.4 seconds
|
| One birth every |
12 minutes
|
46 seconds
|
| One death every |
14.3 minutes
|
4.87 minutes
|
| Daily growth/decline | +327 | +1,619 |
| Annual growth/decline | +119,212 | +590,991 |
| Annual growth/decline rate | +2.01% | +2.85% |
| Population growth rate rank | 50/197 | 21/197 |
| One migration net change every |
31.2 minutes
|
1.34 hours
|
| Annual migration change | +16,892 | +6,562 |
| Net migration rank | 36/196 | 47/196 |
| Foreign-born residents | 2,841,665 | 249,205 |
| Foreign-born residents rank | 26/195 | 105/195 |
| Foreign-born share of population | 48.7% | 1.2% |
| Foreign-born share rank | 9/195 | 150/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Singapore
|
Zambia
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 16,892 | - | 6,562 |
| 2024 | - | 20,011 | - | 7,381 |
| 2023 | 7,101 | 26,996 | 577,660 | 9,521 |
| 2022 | 9,019 | 214,842 | 563,456 | -8,566 |
| 2021 | 15,270 | -44,030 | 535,629 | 8,143 |
| 2020 | 18,763 | -145,556 | 536,484 | 8,156 |
| 2019 | 21,674 | 870 | 528,089 | 18,385 |
| 2018 | 21,427 | 21,820 | 515,644 | 18,431 |
| 2017 | 21,888 | -8,880 | 504,630 | 25,789 |
| 2016 | 25,794 | 13,737 | 497,521 | 25,860 |
| 2015 | 27,121 | 41,852 | 491,021 | 16,261 |
| 2014 | 27,896 | 40,154 | 483,663 | 16,574 |
| 2013 | 25,376 | 52,176 | 476,846 | 15,542 |
| 2012 | 29,750 | 78,501 | 469,406 | 8,958 |
| 2011 | 25,919 | 89,856 | 459,743 | 13,569 |
| 2010 | 24,876 | 72,571 | 448,337 | 22,761 |
| 2009 | 27,930 | 95,841 | 434,458 | 44,867 |
| 2008 | 28,068 | 176,182 | 419,560 | 39,249 |
| 2007 | 26,614 | 192,292 | 403,729 | 49,945 |
| 2006 | 25,968 | 135,625 | 387,891 | 29,517 |
| 2005 | 24,741 | 92,023 | 368,756 | 35,316 |
| 2004 | 24,583 | 50,487 | 349,352 | 7,819 |
| 2003 | 24,689 | -30,012 | 331,189 | 20,845 |
| 2002 | 29,231 | -40,023 | 316,041 | 3,206 |
| 2001 | 31,035 | 45,027 | 302,682 | 23,582 |
| 2000 | 37,057 | 55,218 | 293,186 | -4,338 |
| 1999 | 32,857 | 19,681 | 283,297 | -16,888 |
| 1998 | 33,381 | 51,905 | 275,568 | -26,796 |
| 1997 | 37,960 | 95,241 | 268,198 | -26,276 |
| 1996 | 38,542 | 102,018 | 262,468 | -38,358 |
| 1995 | 38,065 | 91,947 | 257,897 | -45,423 |
| 1994 | 39,319 | 71,170 | 252,023 | -45,504 |
| 1993 | 40,425 | 58,820 | 245,917 | -47,739 |
| 1992 | 39,091 | 54,359 | 239,953 | -43,656 |
| 1991 | 39,188 | 57,821 | 237,957 | -44,203 |
| 1990 | 41,136 | 66,950 | 235,835 | -38,619 |
| 1989 | 36,929 | 68,031 | 233,429 | -36,736 |
| 1988 | 42,407 | 40,976 | 230,118 | -31,270 |
| 1987 | 33,020 | 25,411 | 227,813 | -26,338 |
| 1986 | 27,880 | -7,858 | 224,768 | -16,610 |
| 1985 | 32,010 | -31,036 | 221,351 | -18,474 |
| 1984 | 31,967 | -4,396 | 216,695 | -18,652 |
| 1983 | 30,296 | 11,699 | 212,712 | -11,849 |
| 1982 | 33,346 | 41,568 | 207,621 | -3,676 |
| 1981 | 32,167 | 85,869 | 202,822 | -16,072 |
| 1980 | 30,657 | 42,433 | 198,817 | -24,664 |
| 1979 | 28,363 | -2,384 | 197,578 | -29,515 |
| 1978 | 27,537 | 436 | 194,933 | -30,284 |
| 1977 | 26,508 | 2,757 | 191,557 | -30,423 |
| 1976 | 31,189 | 949 | 186,762 | -30,612 |
| 1975 | 28,509 | 4,104 | 182,258 | -30,886 |
| 1974 | 31,664 | 2,748 | 174,484 | -31,178 |
| 1973 | 36,404 | -495 | 168,258 | -31,472 |
| 1972 | 38,098 | -1,631 | 161,648 | -31,672 |
| 1971 | 35,708 | 573 | 155,249 | -31,651 |
| 1970 | 35,059 | 4,024 | 149,380 | -31,370 |
| 1969 | 34,314 | 6,763 | 142,660 | -11,469 |
| 1968 | 36,216 | 6,792 | 137,315 | -5,447 |
| 1967 | 40,145 | 6,006 | 131,938 | -5,298 |
| 1966 | 44,298 | 3,507 | 127,164 | -5,129 |
| 1965 | 45,474 | 4,199 | 122,814 | -5,023 |
| 1964 | 47,697 | 3,043 | 117,197 | -4,851 |
| 1963 | 49,542 | 2,668 | 114,555 | -4,676 |
| 1962 | 48,830 | 3,714 | 110,173 | -4,428 |
| 1961 | 49,880 | 3,490 | 106,318 | -4,043 |
| 1960 | 51,533 | 2,008 | 102,335 | -3,898 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).
GeoRank.org/population/singapore/zambia | CC BY
Over the last 10 years, 54.8% of the population change in Singapore is from natural causes (a gain of 195,953 people) and 45.2% is from migration (a gain of 161,805 people). In Zambia 97.4% is from natural causes (a gain of 5,233,797 people) and 2.58% is from migration (a gain of 138,554 people).
As of 2024, 2,841,665 residents or 48.7% of the population were not native-born in Singapore, compared to 249,205 people or 1.2% in Zambia.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Singapore and Zambia
|
Singapore
|
Zambia
|
|
|---|---|---|
| Life expectancy | 84.1 years | 66.9 years |
| Average age | 39.3 years | 22.6 years |
| Median age | 36.8 years | 18.8 years |
| Male:Female ratio | 51.7:48.3 | 49.5:50.5 |
| Fertility rate | 0.97 births per woman | 4.1 births per woman |
| Population density | 22,064 ppl/mi² | 78.5 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/singapore/zambia | 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.