Monmouth County, New Jersey
56 ZIP codes · Avg score 48/100 · Grade D · Updated
ZipCheckup grade for Monmouth County: D.
Several federal signals point to home-safety risks in this ZIP.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
Across Monmouth County, EPA compliance records for 56 ZIP codes fall well below average - documented health-based violations affect multiple areas, and the county's sustained low grade points to structural rather than temporary shortfalls in the underlying water systems.
How Monmouth County Compares
How Monmouth County Compares
Monmouth County scores 13 points below the New Jersey state average (61/100) and 25 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Monmouth County, New Jersey
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.1 (asthma 8.8%, diabetes 9.8%)
Estimated additional annual cost per homeowner: $5,538, driven primarily by sea_level
68.2% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Monmouth County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 11 violations. Past 5 years: 36 total (36 health-based). Health-based violations are declining versus the prior 2-year window.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $5,538
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
256,637 housing units in Monmouth County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Monmouth County
Remediation costs are relatively manageable for most homeowners in Monmouth County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Monmouth County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Monmouth County
8 community water systems serving Monmouth County.
- D
- F
- D
- F
- D
- C
Show all 8 water systems
- D
- D
34 total water systems serve Monmouth County.
Systems with the most violations in Monmouth County
5 water systems with recorded EPA violations.
- F
- F
- F
- D
- C
All ZIP Codes in Monmouth County
56 ZIP codes tracked in Monmouth County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 08736 | Manasquan | 64 | C | 8 (1 health) | $850K |
| 2 | 08514 | Cream Ridge | 62 | C | 16 | $508K |
| 3 | 07702 | Shrewsbury | 50 | D | 1 | $736K |
| 4 | 07704 | Fair Haven | 50 | D | 1 | $943K |
| 5 | 07711 | Allenhurst | 50 | D | 1 | $1076K |
| 6 | 07716 | Atlantic Highlands | 50 | D | 2 | $622K |
| 7 | 07718 | Belford | 50 | D | 1 | $490K |
| 8 | 07720 | Bradley Beach | 50 | D | 1 | $857K |
| 9 | 07722 | Colts Neck | 50 | D | 1 | $871K |
| 10 | 07723 | Deal | 50 | D | 1 | $1342K |
| 11 | 07724 | Eatontown | 50 | D | 1 | $487K |
| 12 | 07732 | Highlands | 50 | D | 1 | $397K |
| 13 | 07733 | Holmdel | 50 | D | 1 | $814K |
| 14 | 07737 | Leonardo | 50 | D | 1 | $469K |
| 15 | 07738 | Lincroft | 50 | D | 1 | $719K |
| 16 | 07739 | Little Silver | 50 | D | 1 | $871K |
| 17 | 07740 | Long Branch | 50 | D | 1 | $522K |
| 18 | 07750 | Monmouth Beach | 50 | D | 1 | $918K |
| 19 | 07753 | Neptune | 50 | D | 1 | $391K |
| 20 | 07755 | Oakhurst | 50 | D | 1 | $655K |
| 21 | 07756 | Ocean Grove | 50 | D | 1 | $764K |
| 22 | 07757 | Oceanport | 50 | D | 1 | $686K |
| 23 | 07758 | Port Monmouth | 50 | D | 1 | $479K |
| 24 | 07760 | Rumson | 50 | D | 1 | $1275K |
| 25 | 07764 | West Long Branch | 50 | D | 1 | $631K |
| 26 | 07731 | Howell | 49 | D | 3 | $455K |
| 27 | 07701 | Red Bank | 48 | D | 11 | $552K |
| 28 | 07717 | Avon By The Sea | 48 | D | 6 (1 health) | $1349K |
| 29 | 07719 | Belmar | 48 | D | 12 (1 health) | $629K |
| 30 | 07746 | Marlboro | 48 | D | 6 | $655K |
| 31 | 07751 | Morganville | 48 | D | 5 | $663K |
| 32 | 08730 | Brielle | 48 | D | 2 | $815K |
| 33 | 07762 | Spring Lake | 47 | D | 7 | $871K |
| 34 | 07728 | Freehold | 45 | D | 20 (1 health) | $490K |
| 35 | 07721 | Cliffwood | 44 | D | 12 (3 health) | $388K |
| 36 | 07726 | Englishtown | 44 | D | 13 | $603K |
| 37 | 07735 | Keyport | 39 | F | 30 (3 health) | $385K |
| 38 | 07747 | Matawan | 38 | F | 30 (4 health) | $464K |
| 39 | 07734 | Keansburg | 33 | F | 79 | $310K |
| 40 | 07748 | Middletown | 33 | F | 80 | $568K |
| 41 | 08501 | Allentown | 33 | F | 108 (4 health) | $530K |
| 42 | 07703 | Fort Monmouth | — | — | 1 | — |
| 43 | 07710 | Adelphia | — | — | — | |
| 44 | 07715 | Belmar | — | — | — | |
| 45 | 07727 | Farmingdale | — | — | 2 | $586K |
| 46 | 07730 | Hazlet | — | — | $453K | |
| 47 | 07752 | Navesink | — | — | — | |
| 48 | 07763 | Tennent | — | — | — | |
| 49 | 07765 | Wickatunk | — | — | — | |
| 50 | 07799 | Eatontown | — | — | — | |
| 51 | 08510 | Millstone Township | — | — | 1 | $645K |
| 52 | 08526 | Imlaystown | — | — | — | |
| 53 | 08535 | Millstone Township | — | — | 1 | $684K |
| 54 | 08555 | Roosevelt | — | — | 1 | $355K |
| 55 | 08720 | Allenwood | — | — | 0 | $757K |
| 56 | 08750 | Sea Girt | — | — | 12 (1 health) | $1118K |
Recommended Buyer Guides for Monmouth County
Designed to find the guide that fits the county, not the other way around - the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Water Filters for PFAS — PFAS detected in 3 ZIP codes
- Best Lead Paint Test Kits — 68.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Monmouth County, New Jersey
Overview
Monmouth County in New Jersey covers 56 tracked ZIP records with an average Home Safety Score of D (48/100) across 41 scored records.
47 of 48 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
← Back to New Jersey Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
What You Can Do
Monmouth County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
68.2% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.