Blanchardville: Demographics & People
About 734 people live in Blanchardville, in 354 households. Population grew 11.4% from 659 (2022) to 734 (2024). Median age 40.9 years. (2.6y older than Wisconsin). Children under 18 are 19% of the population. Population is 94% White (non-Hispanic) and 1% Asian. The community is relatively homogeneous (Simpson index 0.01). 48% of households are family-led. County health: 39% adult obesity, 14% smoke.
- 2.1 people per household (vs Wisconsin avg 2.4).
- 52% non-family households (singles, roommates) (vs Wisconsin 43%).
- 62 dependents per 100 working-age (youth + seniors / 18-64) (vs Wisconsin 66).
Population & Trend
Population grew 11.4% from 659 (2022) to 734 (2024) — about 19.0× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~819 (extrapolated at 5.7%/yr trend). Census Bureau Vintage estimate: 943.
| Census data vintage | 2024 |
|---|---|
| Population | 23,709 people |
| Annual growth rate · Population change | 11.4% |
| Annual growth rate · Population (2022) | 659 |
| Annual growth rate · Population (2024) | 734 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 734 people (vs Wisconsin 25,785) |
| Population Estimate | 943 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 40.9y is 2.0 years older than the U.S. median (38.9y). Children under 18 make up 19% — below the U.S. share of ~22%.
| Age Summary · Median age | 40.9 years (vs Wisconsin 38.3y) |
|---|---|
| Age Summary · Children Pct | 19.1% |
| Age Summary · Character | established |
| Age Summary · Total Pop | 734 |
| Age Summary · Under 18 | 140 |
| Age Summary · 18 To 34 | 145.0× |
| Age Summary · 35 To 64 | 308.0× |
| Age Summary · 65 Plus | 141 |
| Population under 18 | 140 |
| Median age | 40.9 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 734 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.01 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 630 |
|---|---|
| Asian residents | 4 |
| Diversity Index · Diversity index (Simpson) | 1.2% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 2 |
| Diversity Index · Largest group share | 99.4% |
| Asian population | 0.7% (vs Wisconsin 3.1%) |
| White (non-Hispanic) population | 93.9% (vs Wisconsin 81.6%) |
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). 1.2% are foreign-born — below the U.S. average of 13.9%. 1% have naturalized to U.S. citizenship.
| Residents born in this state | 600 |
|---|---|
| Residents born in another state | 115 |
| Share born in this state | 81.7% |
| Share born in another state | 18.3% |
| Native-born U.S. citizens | 15.7% |
| Foreign-born residents | 1.2% |
| Naturalized citizens | 1.4% |
| Total foreign-born residents | 13 |
| From Europe | 8 |
| From Africa | 5 |
Households & Family Composition
354 households. Averaging 2.1 people each — smaller than the U.S. average of 2.5. 48% are family households — below the U.S. share of ~65%. Of 147 families, 21% are married couples with children.
| Children under 18 | 130 |
|---|---|
| Total families | 147 |
| Married couples with children | 31 |
| Single-parent households | 14 |
| Average household size | 2.08 |
| Women who gave birth (past year) | 21.7% |
| Grandparents living with grandchildren | 17 |
| Grandparents responsible for grandchildren | 10 |
| Family households | 169 households (vs Wisconsin 7,092) |
| Households that are families | 47.7% (vs Wisconsin 57.2%) |
| Total households | 354 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. 8.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%.
| Moved within the county (past year) | 8.7% |
|---|---|
| Migration · People moving in (annual) | 23,869 |
| Migration · People moving out (annual) | 23,824 |
| Migration · Net migration (in − out) | 45 |
| 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 | 35 |
|---|---|
| Disability rate | 4.9% |
Other
| Congressional District · District | 2 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 55049 |
| Cdc Birth Rate · State Fips | 55 |
| Cdc Birth Rate · County Fips | 049 |
| Cdc Birth Rate · County | Iowa |
| Cdc Birth Rate · Birth Rate | 6.6% |
| Cdc Birth Rate · Lower Ci | 4.50 |
| Cdc Birth Rate · Upper Ci | 9.40 |
| Cdc Mortality · Fips | 55049 |
| Cdc Mortality · County | Iowa County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 648 |
| Cdc Vaccination · Fips | 55049 |
| Cdc Vaccination · County | Iowa County |
| Cdc Vaccination · Dose1 Pop Pct | 75.4% |
| Cdc Vaccination · Series Complete Pct | 70.7% |
| Cdc Vaccination · Booster Pct | 66.7% |
| Cdc Vaccination · Population 2019 | 23,678 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 1.50 |
| Family Score · Schools | 1 |
| Family Score · Children Pct | 19.1% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 734, booming, established, middle-class, mixed |
| Town Summary · Population | 734 people (vs Wisconsin 25,785) |
| Town Summary · County | Iowa County |
Sources: NCES school congressional district assignment · federal dataset cascade