Jamestown, New York's estimated population is 29,315 according to the most recent United States census estimates. Jamestown, New York is the 24th largest city in New York based on official 2017 estimates from the US Census Bureau.
The population density is 3281.12 people/mi² (1266.84 people/km²).
The overall median age is 38.1 years, 36.5 years for males, and 39.3 years for females. For every 100 females there are 96.1 males.
Based on data from the American Community Survey, in 2017 there were households in the city, with an average size of 2.29 people per household. The homeowner vacancy rate was %, with a median rent of $/month. The median house has rooms, and has a value of $.
The median income for households in Jamestown, New York is $31,875, while the mean household income is $43,076.
According to the most recent ACS, the racial composition of Jamestown Ny was:
| Year | Population | Growth | Annual Growth Rate |
| 2018 | 29,315 | -207 | -0.70% |
| 2017 | 29,522 | -214 | -0.72% |
| 2016 | 29,736 | -325 | -1.08% |
| 2015 | 30,061 | -331 | -1.09% |
| 2014 | 30,392 | -269 | -0.88% |
| 2013 | 30,661 | -59 | -0.19% |
| 2012 | 30,720 | -155 | -0.50% |
| 2011 | 30,875 | -203 | -0.65% |
| 2010 | 31,078 | -652 | -0.21% |
| 2000 | 31,730 | -2,951 | -0.89% |
| 1990 | 34,681 | -1,094 | -0.31% |
| 1980 | 35,775 | -4,020 | -1.06% |
| 1970 | 39,795 | -2,023 | -0.49% |
| 1960 | 41,818 | -1,536 | -0.36% |
| 1950 | 43,354 | 716 | 0.17% |
| 1940 | 42,638 | -2,517 | -0.57% |
| 1930 | 45,155 | 6,238 | 1.50% |
| 1920 | 38,917 | 7,620 | 2.20% |
| 1910 | 31,297 | 8,405 | 3.18% |
| 1900 | 22,892 | 6,854 | 3.62% |
| 1890 | 16,038 | 6,681 | 5.54% |
| 1880 | 9,357 | 4,021 | 5.78% |
| 1870 | 5,336 | 2,181 | 5.40% |
| 1860 | 3,155 | 0.00% |
| Race | Population |
| White | 26,147 |
| Black or African American | 1,558 |
| Two or More Races | 1,105 |
| Some Other Race | 991 |
| Asian | 143 |
| American Indian and Alaska Native | 135 |
| Native Hawaiian and Other Pacific Islander | 15 |
38.1
36.5
39.3
There are 22,888 adults, (4,912 of whom are seniors) in Jamestown Ny.
Female
15,348
51.00%
Male
14,746
49.00%
| Type | Count | Average Size | Owned |
| All | 12,788 | 2.29 | 50.3 |
| Non Family | 5,644 | 1.24 | 35.1 |
| Married | 4,181 | 3.06 | 80.5 |
| Female | 1,977 | 3.43 | 32.4 |
| Male | 986 | 2.78 | 44.7 |
| Education Attained | Count | Percentage |
| Less Than 9th Grade | 791 | 3.89% |
| 9th to 12th Grade | 1,989 | 9.78% |
| High School Graduate | 7,239 | 35.61% |
| Some College | 3,900 | 19.18% |
| Associates Degree | 2,863 | 14.08% |
| Bachelors Degree | 2,075 | 10.21% |
| Graduate Degree | 1,474 | 7.25% |
| Name | Total | High School | Bachelors |
| White | 17,887 | 15,875 | 3,284 |
| Hispanic | 1,161 | 688 | 77 |
| Black | 894 | 645 | 148 |
| Other Race | 483 | 279 | 22 |
| Multiple Races | 239 | 239 | 3 |
| Asian | 108 | 43 | 16 |
| Native American | 105 | 105 | 12 |
| Islander | 6 |
The highest rate of high school graduation is among native american people with a rate of 100.00%.
The highest rate of bachelors degrees is among white people with a rate of 18.36%.
$27,269
Average Earnings
$32,408
Average Male
$22,625
Average Female
91.22% of Jamestown Ny residents speak only English, while 8.78% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.90% of the population.
| Name | Total | In Poverty | Poverty Rate |
| White | 24,159 | 6,174 | 25.56% |
| Hispanic | 2,565 | 1,327 | 51.73% |
| Black | 1,484 | 668 | 45.01% |
| Other | 986 | 543 | 55.07% |
| Multiple | 1,088 | 464 | 42.65% |
| Native | 131 | 101 | 77.10% |
| Asian | 139 | 22 | 15.83% |
| Islander | 6 | 6 | 100.00% |
29.67%
Overall Poverty Rate
27.06%
Male Poverty Rate
32.20%
Female Poverty Rate
The race most likely to be in poverty in Jamestown Ny is Islander, with 100.00% below the poverty level.
The race least likely to be in poverty in Jamestown Ny is Asian, with 15.83% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 4.73%. Among those working part-time, it was 30.01%, and for those that did not work, the poverty rate was 40.57%.
38.0%
Overall Marriage Rate
39.2%
Male Marriage Rate
36.9%
Female Marriage Rate
The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.
| Name | Veterans | % of Total |
| White | 1,798 | 8.71% |
| Black | 61 | 5.83% |
| Hispanic | 30 | 2.14% |
| Other | 30 | 4.67% |
| 2 or More | 29 | 9.90% |
| Indian | 18 | 15.52% |
13.06%
Veteran Poverty Rate
30.55%
Veteran Disability Rate
56.7%
Labor Force Participation
51.5%
Employment Rate
9.1%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
98.23%
Native Born
1.77%
Foreign Born
0.72%
Non Citizen
98.23% of Jamestown Ny residents were born in the United States, with 76.66% having been born in New York. 0.72% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.