Erlanger: Demographics & People
Erlanger is home to 19,875 people, in 7,792 households. Population grew 1.0% from 19,677 (2022) to 19,875 (2024). Median age 38.0 years. (0.8y older than Kentucky). Children under 18 are 23% of the population. Population is 81% White (non-Hispanic) and 6% Black. The community is relatively homogeneous (Simpson index 0.19). 60% of households are family-led. County is gaining 2,491 residents per year (2022-2023). County health: 38% adult obesity, 17% smoke.
- 2.6 people per household (vs Kentucky avg 2.7).
- 40% non-family households (singles, roommates) (vs Kentucky 42%).
- 64 dependents per 100 working-age (youth + seniors / 18-64) (vs Kentucky 66).
Population & Trend
Population grew 1.0% from 19,677 (2022) to 19,875 (2024) — about 1.7× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~20,076 (extrapolated at 0.5%/yr trend). Census Bureau Vintage estimate: 20,347.
| Census data vintage | 2024 |
|---|---|
| Population | 135,968 people |
| Annual growth rate · Population change | 1.0% |
| Annual growth rate · Population (2022) | 19,677 |
| Annual growth rate · Population (2024) | 19,875 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | growing |
| Population | 19,875 people (vs Kentucky 19,515) |
| Population Estimate | 20,347 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 38.0y is 0.9 years younger than the U.S. median (38.9y). Children under 18 make up 23% — above the U.S. share of ~22%.
| Age Summary · Median age | 38.0 years (vs Kentucky 37.2y) |
|---|---|
| Age Summary · Children Pct | 23.4% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 19,875 |
| Age Summary · Under 18 | 4,657 |
| Age Summary · 18 To 34 | 4,557.0× |
| Age Summary · 35 To 64 | 7,529.0× |
| Age Summary · 65 Plus | 3,132 |
| Population under 18 | 4,657 |
| Median age | 38.0 years (vs Kentucky 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 19,875 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.19 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 17,034 |
|---|---|
| Black residents | 754 |
| Asian residents | 239 |
| Hispanic or Latino residents | 980 |
| Diversity Index · Diversity index (Simpson) | 19.2% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 89.6% |
| Asian population | 1.3% (at Kentucky median) |
| Black population | 6.0% (vs Kentucky 6.4%) |
| Hispanic or Latino population | 4.8% (vs Kentucky 5.6%) |
| White (non-Hispanic) population | 81.3% (vs Kentucky 79.5%) |
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%. 4% have naturalized to U.S. citizenship.
| Residents born in this state | 11,921 |
|---|---|
| Residents born in another state | 6,901 |
| Share born in this state | 60.0% |
| Share born in another state | 40.0% |
| Native-born U.S. citizens | 34.7% |
| Foreign-born residents | 1.2% |
| Naturalized citizens | 4.1% |
| Total foreign-born residents | 626 |
| From Europe | 32 |
| From Africa | 313 |
| From Latin America | 75 |
Households & Family Composition
7,792 households. Averaging 2.5 people each — matches the U.S. average of 2.5. 60% are family households — below the U.S. share of ~65%. Of 4,894 families, 27% are married couples with children.
| Children under 18 | 4,690 |
|---|---|
| Total families | 4,894 |
| Married couples with children | 1,334 |
| Single-parent households | 184 |
| Average household size | 2.45 |
| Women who gave birth (past year) | 18.4% |
| Grandparents living with grandchildren | 360 |
| Grandparents responsible for grandchildren | 58 |
| Family households | 4,704 households (vs Kentucky 4,204) |
| Households that are families | 60.4% (vs Kentucky 57.8%) |
| Total households | 7,792 households (vs Kentucky 6,786) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 12.4% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 2,491 residents per year on net (IRS migration data).
| Moved within the county (past year) | 12.4% |
|---|---|
| Migration · People moving in (annual) | 141,279 |
| Migration · People moving out (annual) | 138,788 |
| Migration · Net migration (in − out) | 2,491 |
| 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 | 1,243 |
|---|---|
| Disability rate | 6.4% |
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. 331 residents live in group quarters (1.7% of population).
| Living in group quarters | 331 |
|---|
Other
| Congressional District · District | 4 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 21015 |
| Cdc Birth Rate · State Fips | 21 |
| Cdc Birth Rate · County Fips | 015 |
| Cdc Birth Rate · County | Boone |
| Cdc Birth Rate · Birth Rate | 14.7% |
| Cdc Birth Rate · Lower Ci | 13.00 |
| Cdc Birth Rate · Upper Ci | 16.50 |
| Cdc Mortality · Fips | 21015 |
| Cdc Mortality · County | Boone County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 3,026 |
| Cdc Vaccination · Fips | 21015 |
| Cdc Vaccination · County | Boone County |
| Cdc Vaccination · Dose1 Pop Pct | 74.2% |
| Cdc Vaccination · Series Complete Pct | 65.0% |
| Cdc Vaccination · Booster Pct | 49.5% |
| Cdc Vaccination · Population 2019 | 133,581 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 9.50 |
| Family Score · Schools | 9 |
| Family Score · Childcare Centers | 10 |
| Family Score · Youth Sports Orgs | 2 |
| Family Score · Children Pct | 23.4% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 19,875, growing, family-oriented, upper-middle, white collar |
| Town Summary · Population | 19,875 people (vs Kentucky 19,515) |
| Town Summary · County | Boone County |
Sources: NCES school congressional district assignment · federal dataset cascade