Residential delivery area · New Jersey
ZIP Code 08691: Trenton, NJ
ZIP code 08691 uses the postal name Trenton, New Jersey and lies mostly in Mercer County (89% of its land) with the rest in Monmouth County (Census 2020 ZIP-county file). About 17,000 people live there (Census Bureau, ACS 2020-2024), the 7th most populous of Trenton's 12 residential ZIP codes. Median household income is $132,520 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Yardville (6%) and Robbinsville Center (3%), and 3% in smaller places; 88% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Trenton · 12 residential ZIPs
- County
- Mercer County (89%); Monmouth County (11%)
- Census places
- Yardville (6%) census-designated place; Robbinsville Center (3%) census-designated place
- Metro area
- Trenton-Princeton, NJ
- House district
- NJ-3 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 24.2 sq mi · 685 people per sq mi
- PO Box ZIPs
- 15 more ZIP codes use the name Trenton for PO boxes or single organizations
Where is ZIP code 08691?
08691 centers on 40.208°, -74.601° and covers 24.2 square miles of land plus 0.2 of water. It borders 7 ZIP codes: 08561, 08690, 08620, 08501, 08520, 08550, 08610.
The map draws ZIP code areas only. For the streets inside 08691, 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 08691 compare with the rest of Trenton?
| Measure | 08691 | In Trenton | In Mercer County | In NJ |
|---|---|---|---|---|
| People (ACS 2020-2024) | 16,607 | 7th of 12 | 11th of 26 | 209th of 598 |
| Median household income | $133k | 1st of 11 | 7th of 22 | 153rd of 476 |
| Median home value | $552k | 1st of 10 | 10th of 22 | 177th of 515 |
Its median household income is higher than in 94% of U.S. residential ZIP codes, and it is denser than 75% 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 08691?
The 2020 Census counted 16,866 people in 08691; the ACS, which samples households over 2020-2024, estimates 16,607. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 16,607
- 2020 Census count
- 16,866
- Households
- 6,859
- Median age
- 44.6
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 08691?
Of the 16,607 people the ACS estimates in 08691, 24.7% are under 18 and 17.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (59.8%), then Asian (not Hispanic) (27.1%).
- Under 1824.7%
- 18 to 6458.0%
- 65 and older17.3%
- White, not Hispanic59.8%
- Asian, not Hispanic27.1%
- Hispanic or Latino5.4%
- Other or two or more4.6%
- Black, not Hispanic3.1%
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 08691 earn?
Median household income is $132,520 (ACS 2020-2024), the 7th highest of the 22 ranked ZIP codes in Mercer County.
- Median household income
- $132,520±$16,995
- Income per person
- $68,118
- Below the poverty line
- 4.3%
- Unemployed (of the labor force)
- 6.0%
- Adults 25+ with a bachelor's degree
- 65.7%
- Adjusted gross income per tax return, 2022
- $162,3978,330 returns; wages 69% 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 08691?
FHFA's house price index for 08691, built from repeat sales and appraisals of the same homes, rose 83% from 2015 to 2025 and rose 69% from 2020 to 2025, and moved +6.4% in 2025.
- Median home value (owners' estimate)
- $552,000
- Median gross rent
- $1,954
- Homes owned by their occupants
- 74.8%
- Housing units
- 7,139
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 08691?
604 business establishments had a location in this ZIP code in 2023, 20 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services103
- Health care and social assistance72
- Retail trade63
- Construction55
- Other services (except public administration)52
- Accommodation and food services44
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 08691?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 08561 | Windsor | 325 | – | 2.9 mi |
| 08690 | Trenton | 18,841 | $127k | 3.3 mi |
| 08620 | Trenton | 11,621 | $105k | 3.7 mi |
| 08501 | Allentown | 6,364 | $146k | 3.9 mi |
| 08520 | Hightstown | 29,504 | $118k | 4.7 mi |
| 08550 | Princeton Junction | 21,067 | $224k | 5.1 mi |
| 08610 | Trenton | 33,465 | $84k | 6.2 mi |
| 08619 | Trenton | 24,089 | $106k | 5.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.