COUNTY REPORT TX

Jefferson County, Texas

27 ZIP codes · Avg score 87/100 · Grade A

ZipCheckup grade for Jefferson County: A.

Checked records flag no major concern; missing data is unknown.

Jefferson County earns an A or B, the top two of ZipCheckup's five grades, based on the average composite Home Safety Score of its scored ZIP codes. That composite can draw on drinking water records, radon zones, PFAS monitoring and air quality data, so a strong grade summarizes several sources and is not a reading from anyone's tap. Scores also vary from one ZIP code to another, and the 27 ZIP reports listed for the county show where each one stands.

How Jefferson County Compares

Jefferson County87/100
Texas avg83/100
National avg73/100

How Jefferson County Compares

A
County Grade
87/100
Avg Safety Score
27
ZIP Codes
16
Water Systems

Jefferson County scores 4 points above the Texas state average (83/100) and 14 points above the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

A
County Grade
87
Avg Safety Score
27
ZIP Codes
Best ZIP: 77651 (91/100)
Lowest ZIP: 77705 (75/100)
$165K
Median Home Value
$764
Avg Remediation (0.46% of home value)

ZIP Code Risk Map

Water Quality Map: Jefferson County, Texas

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 14.4 (asthma 10.7%, diabetes 15.6%)

Modeled additional annual cost estimate per homeowner: $5,215, 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

Asthma 10.7% (national: 8.9%)
Diabetes 15.6% (national: 10.5%)
Obesity 41.3% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1975
Median Build Year
57%
Pre-1980 Housing
39/100
Infrastructure Stress Indicator
33%
ZIPs with High Infrastructure Stress
Low
Lead Pipe Risk

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: $5,215

Sea Level Rise $2,519/yr
Flood $1,933/yr
Wildfire $300/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

110,781 housing units in Jefferson County

Pre-1940 4%
1940–1959 17%
1960–1979 36%
1980–1999 22%
2000+ 22%

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 Jefferson County

$165K
Median Home Value
$764
Est. Remediation Cost
0.5%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Jefferson 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 Jefferson County residents

Asthma 10.7% (US avg: 8.9%)
Diabetes 15.6% (US avg: 11%)
Obesity 41.3% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Jefferson County ZIP codes

8 community water systems mapped to Jefferson County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

16 water systems mapped to Jefferson County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Jefferson County

5 water systems with violations in EPA records.

All ZIP Codes in Jefferson County

27 ZIP codes tracked in Jefferson County.

# ZIP Code City Safety Score Grade Violations Home Value
1 77651 Port Neches 91 A 3 $231K
2 77701 Beaumont 91 A 1 $79K
3 77702 Beaumont 91 A 1 $142K
4 77703 Beaumont 91 A 1 $97K
5 77706 Beaumont 91 A 1 $239K
6 77707 Beaumont 91 A 1 $163K
7 77708 Beaumont 91 A 1 $167K
8 77640 Port Arthur 90 A 3 (2 health) $97K
9 77642 Port Arthur 89 A 6 (2 health) $96K
10 77665 Winnie 88 A 8 (3 health) $204K
11 77622 Hamshire 86 A 12 (5 health) $223K
12 77713 Beaumont 82 B 20 (6 health) $210K
13 77619 Groves 81 B 12 (5 health) $154K
14 77627 Nederland 75 B 28 (20 health) $201K
15 77705 Beaumont 75 B 110 (61 health) $122K
16 77267 Houston — — —
17 77613 China — — 19 (6 health) $201K
18 77629 Nome — — 79 (42 health) $171K
19 77641 Port Arthur — — —
20 77643 Port Arthur — — —
21 77655 Sabine Pass — — $135K
22 77704 Beaumont — — —
23 77709 Beaumont — — —
24 77710 Beaumont — — —
25 77720 Beaumont — — —
26 77725 Beaumont — — —
27 77726 Beaumont — — —

Recommended Buyer Guides for Jefferson County

Which guides appear depends on what the county data show.

Overview

Jefferson County in Texas covers 27 tracked ZIP records with an average Home Safety Score of A (87/100) across 15 scored records.

17 of 17 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 68 health-based violations appear in the available health breakdown.

← Back to Texas Home Safety Profile

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Jefferson County?
Jefferson County receives an average Home Safety grade of A from its scored ZIP records (27 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Jefferson County?
We map 16 public water systems to 27 ZIP codes in our data for Jefferson County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Jefferson County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Jefferson County is sea level. Across all modeled risk factors, the estimated average additional annual cost is $5,215 per homeowner; actual costs vary by home.
How old are homes in Jefferson County?
The median home build year in Jefferson County is 1975. 57% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Jefferson County compare to Texas?
Jefferson County has an average Home Safety Score of 87/100 under model 4.0.0, which is at or above the Texas state average of 83/100.

How to cite this page

APA ZipCheckup. (2026). Jefferson County, TX: HSS 87/100; 68 Health Violations. https://zipcheckup.com/county/texas/jefferson/
BibTeX
@misc{zipcheckup-county-texas-jefferson,
  author = {{ZipCheckup}},
  title  = {{Jefferson County, TX: HSS 87/100; 68 Health Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/texas/jefferson/}
}

Page version: October 2026.

Get safety alerts for Jefferson, Texas

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.