Monmouth County, New Jersey
56 ZIP codes · Avg score 48/100 · Grade D
ZipCheckup grade for Monmouth County: D.
Federal records show several conditions worth reviewing.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
Households in Monmouth County can use the low grade as a prompt: check the water system serving your address, and consider testing your own tap if the records concern you. The county page lists 56 ZIP codes.
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
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%)
Modeled additional annual cost estimate per homeowner: $5,087, largest modeled factor: Sea Level
57% of homes built before 1980 (lead paint was banned for residential use in 1978)
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 DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $5,087
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
Modeled remediation costs in Monmouth County can be compared with the median property value; actual costs vary by property.
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 mapped to Monmouth County ZIP codes
8 community water systems mapped to Monmouth County ZIP codes; EPA may list more systems serving the county.
- D
- F
- D
- F
- D
- C
Show all 8 water systems
- D
- D
34 water systems mapped to Monmouth County ZIP codes in our data; EPA may list more systems serving the county.
Systems with the most violations in Monmouth County
5 water systems with violations in EPA records.
- 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
Read the note next to each link: it gives the reason, such as a radon zone designation or housing age, that led to the recommendation.
- Water Filters Certified for PFAS Reduction — PFAS detected in 3 ZIP codes
- Best Lead Paint Test Kits — 57% of homes built before 1980
- 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 an average Home Safety grade of D across its scored ZIP records. Here are steps to protect your household.
Test your tap water
Ask a certified laboratory which tests it offers for lead, bacteria, and other contaminants relevant to your home; a $20-$50 kit may cover only certain contaminants.
Consider a certified water filter
NSF/ANSI-certified filters reduce the specific contaminants listed on their certification. 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 reports monitored contaminants detected in the utility's water and related compliance information.
Check for lead in your home
57% of homes in this county were built before 1980. Older plumbing and solder can leach lead into drinking water, especially after water sits in the pipes.