Residential delivery area · Pennsylvania
ZIP Code 18966: Southampton, PA
ZIP code 18966 uses the postal name Southampton, Pennsylvania and lies entirely in Bucks County (Census 2020 ZIP-county file). About 36,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $128,838 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Churchville (13%) and Village Shires (8%); 79% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Southampton · its only residential ZIP
- County
- Bucks County
- Census places
- Churchville (13%) census-designated place; Village Shires (8%) census-designated place
- Metro area
- Philadelphia-Camden-Wilmington, PA-NJ-DE-MD
- House district
- PA-1 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 16.3 sq mi · 2,231 people per sq mi
Where is ZIP code 18966?
18966 centers on 40.188°, -75.010° and covers 16.3 square miles of land plus 0.3 of water. It borders 6 ZIP codes: 18954, 19053, 18974, 19006, 19047, 18940.
The map draws ZIP code areas only. For the streets inside 18966, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 18966 compare with the rest of Bucks County?
| Measure | 18966 | In Bucks County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 36,370 | 5th of 58 | 66th of 1,833 |
| Median household income | $129k | 13th of 39 | 65th of 1,015 |
| Median home value | $488k | 16th of 43 | 64th of 1,069 |
Its median household income is higher than in 93% of U.S. residential ZIP codes, and it is denser than 86% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 18966?
The 2020 Census counted 38,079 people in 18966; the ACS, which samples households over 2020-2024, estimates 36,370. Between the 2010 and 2020 censuses its population grew 0.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 36,370
- 2020 Census count
- 38,079+0.2% since 2010 (37,999)
- Households
- 13,851
- Median age
- 47.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 18966?
Of the 36,370 people the ACS estimates in 18966, 19.5% are under 18 and 24.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.0%).
- Under 1819.5%
- 18 to 6455.6%
- 65 and older24.9%
- White, not Hispanic90.0%
- Other or two or more3.6%
- Asian, not Hispanic3.5%
- Hispanic or Latino2.3%
- Black, not Hispanic0.5%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 18966 earn?
Median household income is $128,838 (ACS 2020-2024), the 13th highest of the 39 ranked ZIP codes in Bucks County. It is not measurably different from 2015-2019 ($121,554 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $128,838
- Income per person
- $64,311
- Below the poverty line
- 3.9%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 50.9%
- Adjusted gross income per tax return, 2022
- $119,24920,170 returns; wages 63% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 18966?
FHFA's house price index for 18966, built from repeat sales and appraisals of the same homes, rose 71% from 2015 to 2025 and rose 49% from 2020 to 2025, and moved +5.7% in 2025.
- Median home value (owners' estimate)
- $488,400
- Median gross rent
- $1,971
- Homes owned by their occupants
- 89.5%
- Housing units
- 14,363
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 18966?
1,197 business establishments had a location in this ZIP code in 2023, 65 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction190
- Professional, scientific, and technical services181
- Health care and social assistance139
- Other services (except public administration)102
- Retail trade92
- Transportation and warehousing83
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 18966?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 18954 | Richboro | 10,380 | $160k | 2.7 mi |
| 19053 | Feasterville Trevose | 28,509 | $108k | 3.0 mi |
| 18974 | Warminster | 43,122 | $104k | 3.9 mi |
| 19006 | Huntingdon Valley | 23,443 | $128k | 4.9 mi |
| 19047 | Langhorne | 34,563 | $110k | 5.2 mi |
| 18940 | Newtown | 29,626 | $157k | 6.3 mi |
| 19009 | Bryn Athyn | 1,124 | $137k | 4.5 mi (near) |
| 19116 | Philadelphia | 33,654 | $68k | 4.9 mi (near) |
| 19040 | Hatboro | 22,078 | $114k | 5.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.