Residential delivery area · New Jersey
ZIP Code 07821: Andover, NJ
ZIP code 07821 uses the postal name Andover, New Jersey and lies mostly in Sussex County (83% of its land) with the rest in Warren County (Census 2020 ZIP-county file). About 9,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $141,860 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Hopatcong (14%) and Andover (3%), and 3% in smaller places; 81% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Andover · its only residential ZIP
- County
- Sussex County (83%); Warren County (17%)
- Census places
- Hopatcong (14%); Andover (3%)
- Neighborhood
- Glasser GeoNames
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House districts
- NJ-7 (89%), NJ-5 (11%) 119th Congress, by share of land
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 42.8 sq mi · 226 people per sq mi
Where is ZIP code 07821?
07821 centers on 40.966°, -74.755° and covers 42.8 square miles of land plus 1.5 of water. It borders 9 ZIP codes: 07820, 07874, 07843, 07860, 07849, 07840, 07871, 07838, 07825.
The map draws ZIP code areas only. For the streets inside 07821, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 07821 compare with the rest of Sussex County?
| Measure | 07821 | In Sussex County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 9,662 | 6th of 21 | 313th of 598 |
| Median household income | $142k | 2nd of 16 | 132nd of 476 |
| Median home value | $432k | 3rd of 18 | 296th of 515 |
Its median household income is higher than in 95% of U.S. residential ZIP codes, and it is denser than 64% 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 07821?
The 2020 Census counted 8,877 people in 07821; the ACS, which samples households over 2020-2024, estimates 9,662. Between the 2010 and 2020 censuses its population fell 3.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,662
- 2020 Census count
- 8,877−3.4% since 2010 (9,193)
- Households
- 3,553
- Median age
- 40.1
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 07821?
Of the 9,662 people the ACS estimates in 07821, 19.6% are under 18 and 15.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.5%).
- Under 1819.6%
- 18 to 6464.7%
- 65 and older15.7%
- White, not Hispanic85.5%
- Hispanic or Latino9.2%
- Other or two or more3.8%
- Asian, not Hispanic1.1%
- Black, not Hispanic0.4%
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 07821 earn?
Median household income is $141,860 (ACS 2020-2024), the 2nd highest of the 16 ranked ZIP codes in Sussex County. It is not measurably different from 2015-2019 ($133,947 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $141,860±$20,639
- Income per person
- $62,510
- Below the poverty line
- 3.4%
- Unemployed (of the labor force)
- 4.0%
- Adults 25+ with a bachelor's degree
- 49.2%
- Adjusted gross income per tax return, 2022
- $119,8514,570 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 07821?
FHFA's house price index for 07821, built from repeat sales and appraisals of the same homes, rose 91% from 2015 to 2025 and rose 69% from 2020 to 2025, and moved +10.2% in 2025.
- Median home value (owners' estimate)
- $431,500
- Median gross rent
- $1,607
- Homes owned by their occupants
- 91.8%
- Housing units
- 3,850
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 07821?
185 business establishments had a location in this ZIP code in 2023, 11 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction37
- Administrative and support and waste management and remediation services19
- Professional, scientific, and technical services17
- Retail trade16
- Health care and social assistance16
- Other services (except public administration)14
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 07821?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 07820 | Allamuchy | 0 | – | 3.5 mi |
| 07874 | Stanhope | 8,752 | $133k | 3.5 mi |
| 07843 | Hopatcong | 11,098 | $109k | 5.3 mi |
| 07860 | Newton | 26,047 | $110k | 6.8 mi |
| 07849 | Lake Hopatcong | 8,380 | $117k | 7.4 mi |
| 07840 | Hackettstown | 32,105 | $106k | 8.4 mi |
| 07871 | Sparta | 21,437 | $168k | 8.6 mi |
| 07838 | Great Meadows | 3,727 | $122k | 9.8 mi |
| 07825 | Blairstown | 9,210 | $124k | 10.9 mi |
| 07828 | Budd Lake | 15,461 | $103k | 5.6 mi (near) |
| 07857 | Netcong | 3,728 | $86k | 5.7 mi (near) |
| 07846 | Johnsonburg | 45 | $100k | 6.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.