Kilmarnock: Demographics & People
Kilmarnock's population stands at 1,333 people, in 677 households. Population shrank 2.1% from 1,361 (2022) to 1,333 (2024). Median age 62.9 years. (4.7y older than Lancaster County; 25.1y older than Virginia). Children under 18 are 18% of the population. Population is 66% White (non-Hispanic) and 32% Black. The community is moderately diverse (Simpson index 0.47). 46% of households are family-led. County is gaining 710 residents per year (2022-2023). County health: 41% adult obesity, 16% smoke.
- 2.0 people per household (vs Virginia avg 2.6).
- 54% non-family households (singles, roommates) (vs Virginia 35%).
- 172 dependents per 100 working-age (youth + seniors / 18-64) (vs Virginia 62).
Population & Trend
Population shrank 2.1% from 1,361 (2022) to 1,333 (2024). Estimated 2026 population: ~1,305 (extrapolated at -1.0%/yr trend). Census Bureau Vintage estimate: 1,269.
| Census data vintage | 2024 |
|---|---|
| Population | 10,919 people |
| Annual growth rate · Population change | -2.1% |
| Annual growth rate · Population (2022) | 1,361 |
| Annual growth rate · Population (2024) | 1,333 |
| Annual growth rate · Trend category | declining |
| Population | 1,333 people (vs Virginia 42,214) |
| Population Estimate | 1,269 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 62.9y is 24.0 years older than the U.S. median (38.9y). Children under 18 make up 18% — below the U.S. share of ~22%.
| Age Summary · Median age | 62.9 years (vs Virginia 37.8y) |
|---|---|
| Age Summary · Children Pct | 17.5% |
| Age Summary · Character | retirement community |
| Age Summary · Total Pop | 1,333 |
| Age Summary · Under 18 | 233 |
| Age Summary · 18 To 34 | 128.0× |
| Age Summary · 35 To 64 | 363.0× |
| Age Summary · 65 Plus | 609 |
| Population under 18 | 233 |
| Median age | 62.9 years (vs Virginia 37.8y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 1,333 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.47 (0 = single group, 1 = perfectly even distribution); this is read as moderately diverse.
| White residents | 861 |
|---|---|
| Black residents | 477 |
| Asian residents | 11 |
| Hispanic or Latino residents | 1 |
| Diversity Index · Diversity index (Simpson) | 46.8% |
| Diversity Index · Diversity label | moderately diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 63.8% |
| Asian population | 1.2% (vs Virginia 5.6%) |
| Black population | 31.9% (vs Virginia 18.2%) |
| Hispanic or Latino population | 0.1% (vs Virginia 10.1%) |
| White (non-Hispanic) population | 66.2% (vs Virginia 53.8%) |
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). 1.1% are foreign-born — below the U.S. average of 13.9%. 4% have naturalized to U.S. citizenship.
| Residents born in this state | 871 |
|---|---|
| Residents born in another state | 388 |
| Share born in this state | 65.3% |
| Share born in another state | 34.7% |
| Native-born U.S. citizens | 29.1% |
| Foreign-born residents | 1.1% |
| Naturalized citizens | 4.4% |
| Total foreign-born residents | 81 |
| From Europe | 16 |
| From Africa | 48 |
Households & Family Composition
677 households. Averaging 1.8 people each — smaller than the U.S. average of 2.5. 46% are family households — below the U.S. share of ~65%. Of 329 families, 6% are married couples with children.
| Children under 18 | 237 |
|---|---|
| Total families | 329 |
| Married couples with children | 20 |
| Single-parent households | 8 |
| Average household size | 1.80 |
| Women who gave birth (past year) | 16.6% |
| Grandparents living with grandchildren | 14 |
| Family households | 308 households (vs Virginia 9,367) |
| Households that are families | 45.5% (vs Virginia 65.0%) |
| Total households | 677 households (vs Virginia 14,324) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 13.1% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 710 residents per year on net (IRS migration data).
| Moved within the county (past year) | 13.1% |
|---|---|
| Migration · People moving in (annual) | 10,678 |
| Migration · People moving out (annual) | 9,968 |
| Migration · Net migration (in − out) | 710 |
| 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 | 121 |
|---|---|
| Disability rate | 10.7% |
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 172 residents live in group quarters (12.9% of population).
| Living in group quarters | 172 |
|---|
Other
| Congressional District · District | 1 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 51103 |
| Cdc Birth Rate · State Fips | 51 |
| Cdc Birth Rate · County Fips | 103 |
| Cdc Birth Rate · County | Lancaster |
| Cdc Birth Rate · Birth Rate | 23.7% |
| Cdc Birth Rate · Lower Ci | 16.30 |
| Cdc Birth Rate · Upper Ci | 33.40 |
| Cdc Mortality · Fips | 51103 |
| Cdc Mortality · County | Lancaster County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 644 |
| Cdc Vaccination · Fips | 51103 |
| Cdc Vaccination · County | Lancaster County |
| Cdc Vaccination · Dose1 Pop Pct | 68.3% |
| Cdc Vaccination · Series Complete Pct | 61.8% |
| Cdc Vaccination · Booster Pct | 39.5% |
| Cdc Vaccination · Population 2019 | 10,603 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 3.20 |
| Family Score · Schools | 2 |
| Family Score · Childcare Centers | 4 |
| Family Score · Children Pct | 17.5% |
| Family Score · Rating | fair |
| Town Summary · Key Facts | population 1,333, declining, retirement community, working-class, white collar |
| Town Summary · Population | 1,333 people (vs Virginia 42,214) |
| Town Summary · County | Lancaster County |
Sources: NCES school congressional district assignment · federal dataset cascade