St. Davids: Demographics & People
Census counts 3,875 people in St. Davids, in 1,632 households. Population shrank 1.9% from 3,950 (2022) to 3,875 (2024). Median age 43.1 years. (4.0y older than Delaware County; 1.9y older than Pennsylvania). Children under 18 are 21% of the population. Population is 77% White (non-Hispanic) and 10% Asian. 64% of households are family-led. County is losing 6,493 residents per year (2022-2023). County health: 31% adult obesity, 13% smoke.
- 2.4 people per household.
- 36% non-family households (singles, roommates).
Population & Trend
Population shrank 1.9% from 3,950 (2022) to 3,875 (2024). Estimated 2026 population: ~3,801 (extrapolated at -0.9%/yr trend). Census Bureau Vintage estimate: 3,705.
| Census data vintage | 2024 |
|---|---|
| Population | 576,830 people |
| Annual growth rate · Population change | -1.9% |
| Annual growth rate · Population (2022) | 3,950 |
| Annual growth rate · Population (2024) | 3,875 |
| Annual growth rate · Trend category | declining |
| Population | 3,875 people |
| Population Estimate | 3,705 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 43.1y is 4.2 years older than the U.S. median (38.9y). Children under 18 make up 21% — near the U.S. share of ~22%.
| Age Summary · Median age | 43.1 years (vs Pennsylvania 41.2y) |
|---|---|
| Age Summary · Children Pct | 21.2% |
| Age Summary · Character | established |
| Population under 18 | 822 |
| Median age | 43.1 years (vs Pennsylvania 41.2y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 3,875 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| White residents | 3,136 |
|---|---|
| Black residents | 53 |
| Asian residents | 435 |
| Hispanic or Latino residents | 176 |
| Diversity Index · Simpson Index | 33.0% |
| Diversity Index · Interpretation | less diverse |
| Asian population | 10.1% |
| Black population | 1.4% |
| Hispanic or Latino population | 4.8% |
| White (non-Hispanic) population | 77.3% |
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%. 14% have naturalized to U.S. citizenship.
| Residents born in this state | 1,601 |
|---|---|
| Residents born in another state | 1,701 |
| Share born in this state | 41.3% |
| Share born in another state | 58.7% |
| Native-born U.S. citizens | 43.9% |
| Foreign-born residents | 1.0% |
| Naturalized citizens | 13.8% |
| Total foreign-born residents | 509 |
| From Europe | 160 |
| From Africa | 242 |
Households & Family Composition
1,632 households. Averaging 2.4 people each — smaller than the U.S. average of 2.5. 64% are family households — near the U.S. share of ~65%. Of 999 families, 42% are married couples with children.
| Children under 18 | 833 |
|---|---|
| Total families | 999 |
| Married couples with children | 417 |
| Single-parent households | 7 |
| Average household size | 2.37 |
| Women who gave birth (past year) | 3.5% |
| Grandparents living with grandchildren | 9,689 |
| Grandparents responsible for grandchildren | 3,831 |
| Family households | 1,036 households |
| Households that are families | 63.5% |
| Total households | 1,632 households |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 25.6% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 6,493 residents per year on net (IRS migration data).
| Moved within the county (past year) | 25.6% |
|---|---|
| Migration · People moving in (annual) | 514,150 |
| Migration · People moving out (annual) | 520,643 |
| Migration · Net migration (in − out) | -6,493 |
| 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 | 102 |
|---|---|
| Disability rate | 2.8% |
Other
| Congressional District · District | 5 |
|---|---|
| Congressional District · Formatted | PA-05 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 42,045 |
| Cdc Birth Rate · State Fips | 42 |
| Cdc Birth Rate · County Fips | 45 |
| Cdc Birth Rate · County | Delaware |
| Cdc Birth Rate · Birth Rate | 9.8% |
| Cdc Birth Rate · Lower Ci | 9.10 |
| Cdc Birth Rate · Upper Ci | 10.50 |
| Cdc Mortality · Fips | 42,045 |
| Cdc Mortality · County | Delaware County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 18,487 |
| Cdc Vaccination · Fips | 42,045 |
| Cdc Vaccination · County | Delaware County |
| Cdc Vaccination · Dose1 Pop Pct | 95.0% |
| Cdc Vaccination · Series Complete Pct | 83.4% |
| Cdc Vaccination · Booster Pct | 44.1% |
| Cdc Vaccination · Population 2019 | 566,747 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 10 |
| Family Score · Schools | 20 |
| Family Score · Children Pct | 21.2% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 3,875, declining, established, affluent, white collar |
| Town Summary · Population | 3,875 people |
| Town Summary · County | Delaware County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade