Village in Westchester County, New York · 3.2 sq mi · 6,181 people per sq mi
19,834 people live in Mamaroneck. The typical household earns $120,000, and the median resident is 40.3 years old.
2026 projection
From 20,151 in 2020
Poverty rate 10.68%
Men 39.8 · Women 41.3
1910–2026
19,834
2026 projection
1.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1910–2026
19,834
2026 projection
1.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 19,834 | -62 | 0.31% |
|---|---|---|---|
| 2025 | 19,896 | +71 | 0.36% |
| 2024 | 19,825 | +151 | 0.77% |
| 2023 | 19,674 | -50 | 0.25% |
| 2022 | 19,724 | -232 | 1.16% |
| 2021 | 19,956 | -195 | 0.97% |
| 2020 | 20,151 | -17 | 0.08% |
| 2019 | 20,168 | +63 | 0.31% |
| 2018 | 20,105 | +45 | 0.22% |
| 2017 | 20,060 | +56 | 0.28% |
Showing 10 of 27 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Mamaroneck has a population change lower than Westchester County, New York, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 198 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 9 residents
54% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 54% | 57% | 52% |
| Never married | 31% | 33% | 29% |
| Divorced | 6% | 4% | 8% |
| Widowed | 6% | 4% | 8% |
| Separated | 3% | 2% | 4% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources