Community & Data
Winthrop Demographics
A Portrait of Winthrop
Winthrop is home to 19,316 people on a peninsula in Boston Harbor. A little more than half of its homes are owner-occupied, about one resident in five was born outside the United States, and more than a quarter of residents speak a language other than English at home. The population is the 2020 Census count; the other Census figures are American Community Survey 2020-2024 five-year estimates, and the voter counts are from the Secretary of the Commonwealth. Follow the source links for the latest.
Key Figures
Sources: US Census Bureau (data.census.gov).
Population & Households
- Population (2020 Census): 19,316
- Households: 7,899
- Persons per household: 2.35
- Foreign-born: 19.3% of residents
- Age 65 and over: 19.4%
- Under 18: 19.7%
Race & Ethnicity
- White: 78.3%
- Asian: 1.4%
- Two or more races: 9.4%
- Hispanic or Latino (any race): 18.1%
- Black or African American: 3.4%
- Speak a language other than English at home: 28.4%
Economy & Housing
- Median household income: $116,167
- Poverty rate: 7.2%
- Median home value: $649,600
- Median gross rent: $2,064
- Homeownership: 56.9% of units
- In the labor force: 67.3%
Registered Voters
Massachusetts publishes voter-registration counts by town through the Secretary of the Commonwealth; the counts below are the state’s enrollment snapshot from August 22, 2026. As in most of the state, Winthrop’s largest bloc by far is voters who choose no party at all. That is worth knowing before you assume the town leans one way: most of the people who decide a Winthrop election are not registered with either party.
- Total registered: 14,386
- Unenrolled (no party): 9,966 (69.28%)
- Democrats: 3,330 (23.15%)
- Republicans: 997 (6.93%)
- Political designations: 93 (0.65%)
See how Winthrop fits into the broader Commonwealth.
MassCivics last checked this page on October 7, 2026.
Sources
- Population and demographics: US Census Bureau, 2020 Census, P1, as of April 1, 2020.
- Population and demographics: US Census Bureau, ACS 5-year 2020-2024, DP02, as of December 31, 2024.
- Population and demographics: US Census Bureau, profile, Winthrop.
- Schools and districts: Massachusetts DESE, Winthrop Public Schools.
- Elections and voter enrollment: Secretary of the Commonwealth (spreadsheet), 2026 state primary registration workbook, as of August 22, 2026.
- Elections and voter enrollment: Secretary of the Commonwealth, Massachusetts Elections Calendar.