Brooklyn: Demographics & People
Brooklyn's population stands at 1,408 people, in 468 households. Population shrank 3.4% from 1,457 (2022) to 1,408 (2024). Median age 35.8 years. (7.8y younger than Green County; 2.5y younger than Wisconsin). Children under 18 are 32% of the population. Population is 81% White (non-Hispanic) and 6% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.18). 86% of households are family-led. County is gaining 1,625 residents per year (2022-2023). County health: 32% adult obesity, 12% smoke.
- 3.0 people per household (vs Wisconsin avg 2.4).
- 14% non-family households (singles, roommates) (vs Wisconsin 43%).
- 71 dependents per 100 working-age (youth + seniors / 18-64) (vs Wisconsin 66).
Population & Trend
Population shrank 3.4% from 1,457 (2022) to 1,408 (2024). Estimated 2026 population: ~1,361 (extrapolated at -1.7%/yr trend). Census Bureau Vintage estimate: 1,300.
| Census data vintage | 2024 |
|---|---|
| Population | 561,504 people |
| Annual growth rate · Population change | -3.4% |
| Annual growth rate · Population (2022) | 1,457 |
| Annual growth rate · Population (2024) | 1,408 |
| Annual growth rate · Trend category | declining |
| Population | 1,408 people (vs Wisconsin 25,785) |
| Population Estimate | 1,300 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 35.8y is 3.1 years younger than the U.S. median (38.9y). Children under 18 make up 32% — above the U.S. share of ~22%.
| Age Summary · Median age | 35.8 years (vs Wisconsin 38.3y) |
|---|---|
| Age Summary · Children Pct | 31.5% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 1,408 |
| Age Summary · Under 18 | 444 |
| Age Summary · 18 To 34 | 240.0× |
| Age Summary · 35 To 64 | 585.0× |
| Age Summary · 65 Plus | 139 |
| Population under 18 | 444 |
| Median age | 35.8 years (vs Wisconsin 38.3y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 1,408 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.18 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 1,184 |
|---|---|
| Black residents | 41 |
| Asian residents | 9 |
| Hispanic or Latino residents | 78 |
| Diversity Index · Diversity index (Simpson) | 18.1% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 90.2% |
| Asian population | 0.9% (vs Wisconsin 3.1%) |
| Black population | 3.1% (vs Wisconsin 2.7%) |
| Hispanic or Latino population | 6.4% (vs Wisconsin 6.6%) |
| White (non-Hispanic) population | 80.8% (at Wisconsin median) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 1.0% are foreign-born — below the U.S. average of 13.9%. 4% have naturalized to U.S. citizenship.
| Residents born in this state | 1,078 |
|---|---|
| Residents born in another state | 267 |
| Share born in this state | 76.6% |
| Share born in another state | 23.4% |
| Native-born U.S. citizens | 19.0% |
| Foreign-born residents | 1.0% |
| Naturalized citizens | 3.5% |
| Total foreign-born residents | 44 |
| From Europe | 11 |
Households & Family Composition
468 households. Averaging 3.0 people each — larger than the U.S. average of 2.5. 86% are family households — above the U.S. share of ~65%. Of 402 families, 44% are married couples with children.
| Children under 18 | 463 |
|---|---|
| Total families | 402 |
| Married couples with children | 177 |
| Single-parent households | 16 |
| Average household size | 3.04 |
| Women who gave birth (past year) | 9.5% |
| Grandparents living with grandchildren | 25 |
| Grandparents responsible for grandchildren | 9 |
| Family households | 403 households (vs Wisconsin 7,092) |
| Households that are families | 86.1% (vs Wisconsin 57.2%) |
| Total households | 468 households (vs Wisconsin 10,843) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 7.0% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 1,625 residents per year on net (IRS migration data).
| Moved within the county (past year) | 7.0% |
|---|---|
| Migration · People moving in (annual) | 522,784 |
| Migration · People moving out (annual) | 521,159 |
| Migration · Net migration (in − out) | 1,625 |
| Migration · Population growing | Yes |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Residents with a disability | 62 |
|---|---|
| Disability rate | 4.5% |
Other
| Congressional District · District | 2 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 55025 |
| Cdc Birth Rate · State Fips | 55 |
| Cdc Birth Rate · County Fips | 025 |
| Cdc Birth Rate · County | Dane |
| Cdc Birth Rate · Birth Rate | 6.5% |
| Cdc Birth Rate · Lower Ci | 5.90 |
| Cdc Birth Rate · Upper Ci | 7.10 |
| Cdc Mortality · Fips | 55025 |
| Cdc Mortality · County | Dane County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 17,292 |
| Cdc Vaccination · Fips | 55025 |
| Cdc Vaccination · County | Dane County |
| Cdc Vaccination · Dose1 Pop Pct | 95.0% |
| Cdc Vaccination · Series Complete Pct | 87.4% |
| Cdc Vaccination · Booster Pct | 71.0% |
| Cdc Vaccination · Population 2019 | 546,695 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 1.80 |
| Family Score · Schools | 1 |
| Family Score · Childcare Centers | 1 |
| Family Score · Children Pct | 31.5% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 1,408, declining, family-oriented, affluent, white collar |
| Town Summary · Population | 1,408 people (vs Wisconsin 25,785) |
| Town Summary · County | Dane County |
Sources: NCES school congressional district assignment · federal dataset cascade