Residential delivery area · Pennsylvania
ZIP Code 18951: Quakertown, PA
ZIP code 18951 uses the postal name Quakertown, Pennsylvania and lies entirely in Bucks County (Census 2020 ZIP-county file). About 37,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $98,268 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Quakertown (3%), Spinnerstown (3%) and Milford Square (1%); 93% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Quakertown · its only residential ZIP
- County
- Bucks County
- Census places
- Quakertown (3%); Spinnerstown (3%) census-designated place; Milford Square (1%) 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
- 71.7 sq mi · 510 people per sq mi
Where is ZIP code 18951?
18951 centers on 40.459°, -75.347° and covers 71.7 square miles of land plus 1.5 of water. It borders 12 ZIP codes: 18955, 18935, 18970, 18036, 18960, 18944, 18073, 18930, 18054, 18041 and more.
The map draws ZIP code areas only. For the streets inside 18951, 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 18951 compare with the rest of Bucks County?
| Measure | 18951 | In Bucks County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 36,568 | 4th of 58 | 64th of 1,833 |
| Median household income | $98k | 31st of 39 | 201st of 1,015 |
| Median home value | $363k | 33rd of 43 | 153rd of 1,069 |
Its median household income is higher than in 80% of U.S. residential ZIP codes, and it is denser than 72% 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 18951?
The 2020 Census counted 36,111 people in 18951; the ACS, which samples households over 2020-2024, estimates 36,568. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 36,568
- 2020 Census count
- 36,111
- Households
- 14,202
- Median age
- 44.2
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 18951?
Of the 36,568 people the ACS estimates in 18951, 20.7% are under 18 and 19.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.1%).
- Under 1820.7%
- 18 to 6459.4%
- 65 and older19.9%
- White, not Hispanic84.1%
- Hispanic or Latino6.5%
- Other or two or more3.7%
- Asian, not Hispanic3.6%
- Black, not Hispanic2.1%
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 18951 earn?
Median household income is $98,268 (ACS 2020-2024), the 31st highest of the 39 ranked ZIP codes in Bucks County.
- Median household income
- $98,268
- Income per person
- $46,855
- Below the poverty line
- 6.2%
- Unemployed (of the labor force)
- 6.2%
- Adults 25+ with a bachelor's degree
- 32.5%
- Adjusted gross income per tax return, 2022
- $84,09018,480 returns; wages 73% 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 18951?
FHFA's house price index for 18951, built from repeat sales and appraisals of the same homes, rose 78% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +5.7% in 2025.
- Median home value (owners' estimate)
- $363,200
- Median gross rent
- $1,441
- Homes owned by their occupants
- 82.0%
- Housing units
- 14,881
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 18951?
1,015 business establishments had a location in this ZIP code in 2023, 71 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade159
- Health care and social assistance122
- Construction118
- Other services (except public administration)116
- Accommodation and food services95
- Professional, scientific, and technical services88
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 18951?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 18955 | Richlandtown | 1,511 | $79k | 2.5 mi |
| 18935 | Milford Square | 273 | $113k | 3.1 mi |
| 18970 | Trumbauersville | 553 | $115k | 3.7 mi |
| 18036 | Coopersburg | 15,581 | $129k | 4.1 mi |
| 18960 | Sellersville | 13,597 | $109k | 6.5 mi |
| 18944 | Perkasie | 27,570 | $131k | 7.5 mi |
| 18073 | Pennsburg | 11,755 | $116k | 8.4 mi |
| 18930 | Kintnersville | 1,892 | $127k | 8.7 mi |
| 18054 | Green Lane | 4,932 | $102k | 8.8 mi |
| 18041 | East Greenville | 5,768 | $99k | 8.9 mi |
| 18942 | Ottsville | 2,377 | $100k | 9.6 mi |
| 18077 | Riegelsville | 2,203 | $98k | 9.6 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.