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Mendham borough, NJ

ZIP Code 07945 — Mendham borough, NJ Demographics & Data

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Wealthy AreaLow Snow AreaRemote Work Hub

Map, Quick Facts & Location

Quick Facts

Local time
Population
9,771
Median Income
$243,665
+224% vs US avg
Home Value
$894,200
+157% vs US avg
Median Rent
$2,961
+155% vs US avg
Median Age
46.3 yrs
+19% vs US avg
Area Code
Congress
Top Ancestry
IrishItalianGerman
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Location
Coordinates
40.7819, -74.5995
Elevation
105 ft
Land Area
18.7 sq mi
Water Area
0.3 sq mi (2% water)

At a glance

Population
9,771
Density
N/A
Median income
$243,665
+224% vs US avg
Home value
$894,200
+157% vs US avg
Median rent
$2,961
+155% vs US avg
Timezone

Overview of ZIP Code 07945

Tech hubTech / corporate campus area
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Sunrise, sunset & moon

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What to know about ZIP 07945

ZIP code 07945 covers Mendham, NJ in Morris County with a population of about 9,771.

At a glance, the area shows median age of 46.3 versus a U.S. median of about 38.9.

It sits in telephone area codes 862, 973; U.S. House district NJ-7; the NEW YORK media market.

Local search focus: Tech hub

Mendham, NJ aligns with a tech / corporate-campus profile (high remote-work / education / income profile or known campus context). Broadband quality, remote-work share, and nearby employer campuses often matter as much as classic residential stats.

Income and economy in Mendham, NJ

Median household income in ZIP 07945 is about $243,665 — about 224% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 1.9%; unemployment rate near 2.4%; 77.9% of adults with a bachelor’s degree or higher (about 44.2 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Education, and Finance and insurance; about 28.4% of workers reporting work-from-home (about 13.2 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing and affordability in ZIP 07945

Median home value is about $894,200 — about 157% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,961 (about 155% above the U.S. median rent ($1,163)), and owner-occupancy near 91.7% (about 26.3 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 07945 in Mendham, NJ, a household would need roughly $246,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $5,744. That is roughly in line with the local median household income ($243,665). Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

Climate risk and migration signals

FEMA’s National Risk Index rates natural-hazard risk for Mendham borough, NJ as Relatively Moderate (composite score 92.9), which is among the highest nationally. The strongest component scores on US5 are flood (96.3) and hurricane (85.2). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Mendham borough, NJ show little to no average snow and around 45.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 629 for ZIP 07945 (Mendham borough, NJ) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.

Nearby (from this ZIP)

Airport MMU (9.7 miles (15.7 km)) · County College of Morris (5.4 miles (8.7 km)) · Morristown National Historical Park (3.6 miles (5.8 km)) · VA: Morristown CBOC (5.9 miles (9.5 km))

Full lists and map pins are in the Infrastructure section below.