Residential delivery area · New Jersey
ZIP Code 07830: Califon, NJ
ZIP code 07830 uses the postal name Califon, New Jersey and lies mostly in Hunterdon County (82% of its land) with the rest in Morris County (Census 2020 ZIP-county file). About 7,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $180,852 (Census Bureau, ACS 2020-2024). By Census place, 4% of its land lies in Califon; 96% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Califon · its only residential ZIP
- County
- Hunterdon County (82%); Morris County (18%)
- Census places
- Califon
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House district
- NJ-7 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 26.0 sq mi · 284 people per sq mi
Where is ZIP code 07830?
07830 centers on 40.719°, -74.794° and covers 26.0 square miles of land plus 0.2 of water. It borders 7 ZIP codes: 07979, 08858, 07853, 08833, 08826, 08801, 07931.
The map draws ZIP code areas only. For the streets inside 07830, 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 07830 compare with the rest of Hunterdon County?
| Measure | 07830 | In Hunterdon County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 7,379 | 8th of 26 | 370th of 598 |
| Median household income | $181k | 3rd of 20 | 52nd of 476 |
| Median home value | $656k | 2nd of 24 | 116th of 515 |
Its median household income is higher than in 98% of U.S. residential ZIP codes, and it is denser than 66% 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 07830?
The 2020 Census counted 6,529 people in 07830; the ACS, which samples households over 2020-2024, estimates 7,379. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 7,379
- 2020 Census count
- 6,529
- Households
- 2,777
- Median age
- 50.5
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 07830?
Of the 7,379 people the ACS estimates in 07830, 21.2% are under 18 and 20.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (81.4%).
- Under 1821.2%
- 18 to 6458.6%
- 65 and older20.2%
- White, not Hispanic81.4%
- Hispanic or Latino6.1%
- Black, not Hispanic6.1%
- Other or two or more3.7%
- Asian, not Hispanic2.7%
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 07830 earn?
Median household income is $180,852 (ACS 2020-2024), the 3rd highest of the 20 ranked ZIP codes in Hunterdon County.
- Median household income
- $180,852±$24,689
- Income per person
- $79,062
- Below the poverty line
- 3.1%
- Unemployed (of the labor force)
- 5.2%
- Adults 25+ with a bachelor's degree
- 66.4%
- Adjusted gross income per tax return, 2022
- $196,7823,250 returns; wages 60% 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 07830?
FHFA's house price index for 07830, built from repeat sales and appraisals of the same homes, rose 61% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +8.7% in 2025.
- Median home value (owners' estimate)
- $656,400
- Median gross rent
- $1,979
- Homes owned by their occupants
- 91.3%
- Housing units
- 2,809
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 07830?
170 business establishments had a location in this ZIP code in 2023, 9 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction32
- Professional, scientific, and technical services28
- Retail trade22
- Other services (except public administration)18
- Health care and social assistance15
- Accommodation and food services12
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 07830?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 07979 | Pottersville | 214 | – | 3.4 mi |
| 08858 | Oldwick | 20 | – | 3.9 mi |
| 07853 | Long Valley | 12,339 | $176k | 4.7 mi |
| 08833 | Lebanon | 9,184 | $173k | 5.2 mi |
| 08826 | Glen Gardner | 5,459 | $124k | 6.2 mi |
| 08801 | Annandale | 7,267 | $150k | 8.0 mi |
| 07931 | Far Hills | 2,985 | $201k | 9.7 mi |
| 07870 | Schooleys Mountain | 34 | – | 6.0 mi (near) |
| 08829 | High Bridge | 3,580 | $113k | 6.1 mi (near) |
| 07934 | Gladstone | 1,293 | $245k | 6.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.