Residential delivery area · New Jersey
ZIP Code 07945: Mendham, NJ
ZIP code 07945 uses the postal name Mendham, New Jersey and lies entirely in Morris County (Census 2020 ZIP-county file). About 9,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $250,000 or more (Census Bureau, ACS 2020-2024). By Census place, 30% of its land lies in Mendham, and 5% in smaller places; 65% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Mendham · its only residential ZIP
- County
- Morris County
- Census places
- Mendham
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House districts
- NJ-7 (91%), NJ-11 (9%) 119th Congress, by share of land
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 19.5 sq mi · 497 people per sq mi
Where is ZIP code 07945?
07945 centers on 40.781°, -74.602° and covers 19.5 square miles of land plus 0.3 of water. It borders 6 ZIP codes: 07970, 07924, 07930, 07869, 07960, 07931.
The map draws ZIP code areas only. For the streets inside 07945, 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 07945 compare with the rest of Morris County?
| Measure | 07945 | In Morris County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 9,690 | 25th of 57 | 311th of 598 |
| Median household income | $250k+ | 1= of 43 | 1= of 476 |
| Median home value | $931k | 4th of 49 | 31st of 515 |
1= means a shared first place: 07945's median household income ties with 1 other ZIP code at the Census cap in Morris County; median household income ties with 7 other ZIP codes at the Census cap in New Jersey.
Its median household income is at the Census cap of $250,000 or more, like 117 other U.S. residential ZIP codes (69 of the 118 are large enough to rank), 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 07945?
The 2020 Census counted 9,875 people in 07945; the ACS, which samples households over 2020-2024, estimates 9,690. Between the 2010 and 2020 censuses its population grew 3.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,690
- 2020 Census count
- 9,875+3.5% since 2010 (9,539)
- Households
- 3,497
- Median age
- 46.3
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 07945?
Of the 9,690 people the ACS estimates in 07945, 23.2% are under 18 and 18.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (79.7%).
- Under 1823.2%
- 18 to 6458.1%
- 65 and older18.7%
- White, not Hispanic79.7%
- Other or two or more8.2%
- Hispanic or Latino7.2%
- Asian, not Hispanic4.6%
- Black, not Hispanic0.2%
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 07945 earn?
Median household income is $250,000 or more (ACS 2020-2024), the highest of the 43 ranked ZIP codes in Morris County.
- Median household income
- $250,000 or more
- Income per person
- $117,181
- Below the poverty line
- 2.7%
- Unemployed (of the labor force)
- 3.1%
- Adults 25+ with a bachelor's degree
- 78.7%
- Adjusted gross income per tax return, 2022
- $365,4634,600 returns; wages 55% 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 07945?
FHFA's house price index for 07945, built from repeat sales and appraisals of the same homes, rose 55% from 2015 to 2025 and rose 50% from 2020 to 2025, and moved +10.2% in 2025.
- Median home value (owners' estimate)
- $931,100
- Median gross rent
- $3,500 or more
- Homes owned by their occupants
- 91.5%
- Housing units
- 3,709
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 07945?
233 business establishments had a location in this ZIP code in 2023, 33 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services41
- Other services (except public administration)30
- Health care and social assistance25
- Construction22
- Finance and insurance20
- Accommodation and food services18
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 07945?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 07970 | Mount Freedom | 215 | $250k+ | 2.5 mi |
| 07924 | Bernardsville | 7,713 | $236k | 3.8 mi |
| 07930 | Chester | 8,648 | $241k | 4.3 mi |
| 07869 | Randolph | 26,022 | $170k | 4.4 mi |
| 07960 | Morristown | 46,702 | $160k | 5.2 mi |
| 07931 | Far Hills | 2,985 | $201k | 6.9 mi |
| 07926 | Brookside | 161 | $250k+ | 2.2 mi (near) |
| 07934 | Gladstone | 1,293 | $245k | 4.9 mi (near) |
| 07977 | Peapack | 917 | $151k | 5.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.