ZIP Code 08831
standardSource:
Monroe Township · Middlesex County · New Jersey
- Population
- 45,620
- Median income
- $109,042
- Median home value
- $516,800
- Bachelor's or higher
- 51.8%
- Land area
- 130.3 sq mi
350/sq mi
▲ 43% vs US
higher than 86% of US ZIPs
▲ 86% vs US
higher than 88% of US ZIPs
Median age 54.8
New York
ZIP code 08831 in Monroe Township, New Jersey has a population of 45,620. The median household income is $109,042, which is 43% above the national average. Median home value is $516,800, 86% above the US average. 51.8% of residents hold a bachelor's degree or higher.
ZIP code 08831 is classified by USPS as a standard delivery area and covers roughly 130.3 square miles in Monroe Township, Middlesex County, New Jersey. The area is home to 45,620 residents, producing a population density of 350 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 08831 against New Jersey and the nation.
On the economic side, the median household income for ZIP 08831 sits at $109,042 (11% below the New Jersey average), while per-capita income is $67,012. The poverty rate stands at 3.6% and the unemployment rate at 5.1%. On housing, the median home value is $516,800 (0% above the state average) with median rent at $2,014 per month, and 89.6% of occupied units are owner-occupied, a direct signal of whether 08831 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 51.8% of adults hold a bachelor's degree or higher, the median age is 54.8, and the average commute is 38 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Middlesex County, so you can benchmark 08831 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 08831
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 08831.
- Professional, scientific, and technical services
Professional, scientific, and technical services
245 establishments
- Health care and social assistance
Health care and social assistance
152 establishments
- Construction
Construction
109 establishments
- Wholesale trade 87
Wholesale trade
87 establishments
- Other services (except public administration) 87
Other services (except public administration)
87 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 08831, Monroe Township, NJ · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
45,620
Population
130.3
Area (sq mi)
350
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 08831?
54.8
Median Age
48.4%
Male
51.6%
Female
27.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$109,042
Median Household Income
-11% vs state
$67,012
Per Capita Income
3.6%
Poverty Rate
5.1%
Unemployment Rate
37.9 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
24,806
Total Housing Units
24,083
Occupied Units
723
Vacant Units
2.29
Avg Household Size
Occupancy Type
$516,800
Median Home Value
+0% vs state
$2,014
Median Rent
1994
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+15.0%
YoY Change (2024)
278
HPI Index (2000 = 100)
+178%
Total Change Since 2000
Home values in ZIP 08831 have increased 15.0% over the past year (2024). Since 2000, this ZIP has seen +178% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +2.2% | 184 |
| 2021 | +8.0% | 199 |
| 2022 | +16.0% | 231 |
| 2023 | +5.0% | 242 |
| 2024 | +15.0% | 278 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 1,134 business establishments in ZIP 08831, employing approximately 17,939 people with a combined annual payroll of $1,324,043,000.
1,134
Businesses
17,939
Employees
$1.3B
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 245 | 21.6% |
| Health care and social assistance | 152 | 13.4% |
| Construction | 109 | 9.6% |
| Wholesale trade | 87 | 7.7% |
| Other services (except public administration) | 87 | 7.7% |
| Retail trade | 84 | 7.4% |
| Accommodation and food services | 81 | 7.1% |
| Transportation and warehousing | 79 | 7.0% |
| Administrative and support and waste management and remediation services | 72 | 6.3% |
| Finance and insurance | 44 | 3.9% |
| Real estate and rental and leasing | 25 | 2.2% |
| Educational services | 18 | 1.6% |
| Arts, entertainment, and recreation | 18 | 1.6% |
| Information | 15 | 1.3% |
| Manufacturing | 14 | 1.2% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 08831 vs 08828 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 08828 | Helmetta, NJ | 2,178 | 3.5 mi |
| 08535 | Millstone Township, NJ | 5,385 | 6.3 mi |
| 08512 | Cranbury, NJ | 10,105 | 5.1 mi |
| 08884 | Spotswood, NJ | 8,257 | 5.1 mi |
| 08810 | Dayton, NJ | 8,401 | 4.6 mi |
| 08816 | East Brunswick, NJ | 46,298 | 7.1 mi |
| 08850 | Milltown, NJ | 8,281 | 8.4 mi |
| 07726 | Englishtown, NJ | 42,508 | 5.5 mi |
| 08510 | Millstone Township, NJ | 5,231 | 9.4 mi |
| 08555 | Roosevelt, NJ | 877 | 7.7 mi |
More ZIP Codes in Middlesex County
Related Areas
Frequently Asked Questions
What county is ZIP code 08831 in? ▼
What is the population of ZIP code 08831? ▼
What is the median household income in ZIP 08831? ▼
What is the average home value in ZIP 08831? ▼
What is the demographic makeup of ZIP 08831? ▼
How many businesses are in ZIP code 08831? ▼
What are the main industries in ZIP code 08831? ▼
How have home values changed in ZIP code 08831? ▼
What is the education level in ZIP code 08831? ▼
What is the average commute time in ZIP 08831? ▼
What percentage of residents own vs. rent in ZIP 08831? ▼
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ZIP Code Research Guides
Official Data Resources for Monroe Township, NJ
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.