Residential delivery area · New Jersey
ZIP Code 08520: Hightstown, NJ
ZIP code 08520 uses the postal name Hightstown, New Jersey and lies entirely in Mercer County (Census 2020 ZIP-county file). About 30,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $118,010 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Twin Rivers (7%) and Hightstown (7%); 86% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Hightstown · its only residential ZIP
- County
- Mercer County
- Census places
- Twin Rivers (7%) census-designated place; Hightstown (7%)
- Metro area
- Trenton-Princeton, NJ
- House district
- NJ-3 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 18.0 sq mi · 1,636 people per sq mi
Where is ZIP code 08520?
08520 centers on 40.258°, -74.539° and covers 18.0 square miles of land plus 0.1 of water. It borders 7 ZIP codes: 08561, 08550, 08512, 08691, 08535, 08501, 08831.
The map draws ZIP code areas only. For the streets inside 08520, 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 08520 compare with the rest of Mercer County?
| Measure | 08520 | In Mercer County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 29,504 | 6th of 26 | 99th of 598 |
| Median household income | $118k | 12th of 22 | 214th of 476 |
| Median home value | $377k | 14th of 22 | 368th of 515 |
Its median household income is higher than in 90% of U.S. residential ZIP codes, and it is denser than 83% 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 08520?
The 2020 Census counted 29,291 people in 08520; the ACS, which samples households over 2020-2024, estimates 29,504. Between the 2010 and 2020 censuses its population grew 5.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 29,504
- 2020 Census count
- 29,291+5.1% since 2010 (27,869)
- Households
- 10,974
- Median age
- 40.9
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 08520?
Of the 29,504 people the ACS estimates in 08520, 21.4% are under 18 and 15.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (44.7%), then Hispanic or Latino (23.8%).
- Under 1821.4%
- 18 to 6463.4%
- 65 and older15.2%
- White, not Hispanic44.7%
- Hispanic or Latino23.8%
- Asian, not Hispanic20.4%
- Black, not Hispanic6.5%
- Other or two or more4.6%
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 08520 earn?
Median household income is $118,010 (ACS 2020-2024), the 12th highest of the 22 ranked ZIP codes in Mercer County. It is not measurably different from 2015-2019 ($114,624 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $118,010±$13,676
- Income per person
- $53,563
- Below the poverty line
- 6.1%
- Unemployed (of the labor force)
- 4.8%
- Adults 25+ with a bachelor's degree
- 46.3%
- Adjusted gross income per tax return, 2022
- $92,29415,280 returns; wages 78% 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 08520?
FHFA's house price index for 08520, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved +3.7% in 2025.
- Median home value (owners' estimate)
- $376,600
- Median gross rent
- $1,657
- Homes owned by their occupants
- 69.9%
- Housing units
- 11,498
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 08520?
669 business establishments had a location in this ZIP code in 2023, 5 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services108
- Retail trade85
- Other services (except public administration)80
- Health care and social assistance75
- Accommodation and food services73
- Administrative and support and waste management and remediation services47
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 08520?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 08561 | Windsor | 325 | – | 2.3 mi |
| 08550 | Princeton Junction | 21,067 | $224k | 4.6 mi |
| 08512 | Cranbury | 12,928 | $119k | 4.6 mi |
| 08691 | Trenton | 16,607 | $133k | 4.7 mi |
| 08535 | Millstone Township | 4,999 | $210k | 5.9 mi |
| 08501 | Allentown | 6,364 | $146k | 6.4 mi |
| 08831 | Monroe Township | 55,658 | $109k | 7.7 mi |
| 08555 | Roosevelt | 996 | $110k | 4.5 mi (near) |
| 08536 | Plainsboro | 20,817 | $138k | 5.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.