Dearborn: Demographics & People
Dearborn is home to 557 people, in 220 households. Population grew 2.2% from 545 (2022) to 557 (2024). Median age 41.1 years. (2.0y older than Platte County; 3.9y older than Missouri). Children under 18 are 24% of the population. Population is 94% White (non-Hispanic) and 3% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.07). 73% of households are family-led. County is losing 125 residents per year (2022-2023). County health: 40% adult obesity, 20% smoke.
- 2.5 people per household (vs Missouri avg 2.4).
- 27% non-family households (singles, roommates) (vs Missouri 42%).
- 85 dependents per 100 working-age (youth + seniors / 18-64) (vs Missouri 67).
Population & Trend
Population grew 2.2% from 545 (2022) to 557 (2024) — about 3.7× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~569 (extrapolated at 1.1%/yr trend). Census Bureau Vintage estimate: 586.
| Census data vintage | 2024 |
|---|---|
| Population | 84,793 people |
| Annual growth rate · Population change | 2.2% |
| Annual growth rate · Population (2022) | 545 |
| Annual growth rate · Population (2024) | 557 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | growing |
| Population | 557 people (vs Missouri 29,363) |
| Population Estimate | 586 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 41.1y is 2.2 years older than the U.S. median (38.9y). Children under 18 make up 24% — above the U.S. share of ~22%.
| Age Summary · Median age | 41.1 years (vs Missouri 37.2y) |
|---|---|
| Age Summary · Children Pct | 23.9% |
| Age Summary · Character | established |
| Age Summary · Total Pop | 557 |
| Age Summary · Under 18 | 133 |
| Age Summary · 18 To 34 | 111.0× |
| Age Summary · 35 To 64 | 190.0× |
| Age Summary · 65 Plus | 123 |
| Population under 18 | 133 |
| Median age | 41.1 years (vs Missouri 37.2y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 557 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.07 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 513 |
|---|---|
| Asian residents | 8 |
| Hispanic or Latino residents | 10 |
| Diversity Index · Diversity index (Simpson) | 6.6% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 96.6% |
| Asian population | 1.1% (vs Missouri 1.9%) |
| Hispanic or Latino population | 2.7% (vs Missouri 5.3%) |
| White (non-Hispanic) population | 93.9% (vs Missouri 77.7%) |
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 (7)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 0.4% are foreign-born — below the U.S. average of 13.9%. 2% have naturalized to U.S. citizenship.
| Residents born in this state | 422 |
|---|---|
| Residents born in another state | 124 |
| Share born in this state | 75.8% |
| Share born in another state | 24.2% |
| Native-born U.S. citizens | 22.3% |
| Foreign-born residents | 0.4% |
| Naturalized citizens | 1.6% |
| Total foreign-born residents | 3,237 |
Households & Family Composition
220 households. Averaging 2.5 people each — matches the U.S. average of 2.5. 73% are family households — above the U.S. share of ~65%. Of 158 families, 29% are married couples with children.
| Children under 18 | 154 |
|---|---|
| Total families | 158 |
| Married couples with children | 46 |
| Single-parent households | 20 |
| Average household size | 2.48 |
| Women who gave birth (past year) | 16.7% |
| Grandparents living with grandchildren | 12 |
| Family households | 161 households (vs Missouri 7,284) |
| Households that are families | 73.2% (vs Missouri 58.3%) |
| Total households | 220 households (vs Missouri 11,992) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 6.9% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 125 residents per year on net (IRS migration data).
| Moved within the county (past year) | 6.9% |
|---|---|
| Migration · People moving in (annual) | 72,762 |
| Migration · People moving out (annual) | 72,887 |
| Migration · Net migration (in − out) | -125 |
| 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 | 58 |
|---|---|
| Disability rate | 11.6% |
Other
| Congressional District · District | 6 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 29021 |
| Cdc Birth Rate · State Fips | 29 |
| Cdc Birth Rate · County Fips | 021 |
| Cdc Birth Rate · County | Buchanan |
| Cdc Birth Rate · Birth Rate | 30.6% |
| Cdc Birth Rate · Lower Ci | 27.40 |
| Cdc Birth Rate · Upper Ci | 34.00 |
| Cdc Mortality · Fips | 29021 |
| Cdc Mortality · County | Buchanan County |
| Cdc Mortality · Urban Rural | Small metro |
| Cdc Mortality · Total Deaths 2020 2023 | 4,460 |
| Cdc Vaccination · Fips | 29021 |
| Cdc Vaccination · County | Buchanan County |
| Cdc Vaccination · Dose1 Pop Pct | 46.7% |
| Cdc Vaccination · Series Complete Pct | 40.6% |
| Cdc Vaccination · Booster Pct | 45.7% |
| Cdc Vaccination · Population 2019 | 87,364 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.80 |
| Family Score · Schools | 3 |
| Family Score · Childcare Centers | 1 |
| Family Score · Children Pct | 23.9% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 557, growing, established, working-class, mixed |
| Town Summary · Population | 557 people (vs Missouri 29,363) |
| Town Summary · County | Buchanan County |
Sources: NCES school congressional district assignment · federal dataset cascade