COUNTY REPORT CA

Stanislaus County, California

29 ZIP codes · Avg score 83/100 · Grade B

ZipCheckup grade for Stanislaus County: B.

This ZIP has a few items worth a quick check.

In Stanislaus County, where this site follows 29 ZIP codes, the composite grade sits in the upper band.

How Stanislaus County Compares

Stanislaus County83/100
California avg76/100
National avg73/100

How Stanislaus County Compares

B
County Grade
83/100
Avg Safety Score
29
ZIP Codes
26
Water Systems

Stanislaus County scores 7 points above the California state average (76/100) and 10 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

B
County Grade
83
Avg Safety Score
29
ZIP Codes
Best ZIP: 95316 (92/100)
Lowest ZIP: 95351 (67/100)
$426K
Median Home Value
$600
Avg Remediation (0.14% of home value)

ZIP Code Risk Map

Water Quality Map: Stanislaus County, California

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: 12.3 (asthma 10%, diabetes 11.9%)

Modeled additional annual cost estimate per homeowner: $2,091, largest modeled factor: Sea Level

48% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 10% (national: 8.9%)
Diabetes 11.9% (national: 10.5%)
Obesity 36.4% (national: 32.4%)

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

Infrastructure Overview

1984
Median Build Year
48%
Pre-1980 Housing
37/100
Infrastructure Stress Indicator
27%
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: $2,091

Sea Level Rise $938/yr
Flood $509/yr
Energy Code Gap $378/yr

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

Housing Age Distribution

185,594 housing units in Stanislaus County

Pre-1940 6%
1940–1959 13%
1960–1979 29%
1980–1999 31%
2000+ 20%

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 Stanislaus County

$426K
Median Home Value
$600
Est. Remediation Cost
0.1%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Stanislaus 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 Stanislaus County residents

Asthma 10% (US avg: 8.9%)
Diabetes 11.9% (US avg: 11%)
Obesity 36.4% (US avg: 32.4%)

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

Water systems mapped to Stanislaus County ZIP codes

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

Show all 8 water systems

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

Systems with the most violations in Stanislaus County

5 water systems with violations in EPA records.

All ZIP Codes in Stanislaus County

29 ZIP codes tracked in Stanislaus County.

# ZIP Code City Safety Score Grade Violations Home Value
1 95316 Denair 92 A 0 $454K
2 95328 Keyes 92 A 0 $435K
3 95363 Patterson 92 A 0 $448K
4 95368 Salida 92 A 0 $449K
5 95382 Turlock 92 A 0 $483K
6 95386 Waterford 92 A 0 $391K
7 95387 Westley 92 A 0 $349K
8 95367 Riverbank 91 A 1 (1 health) $445K
9 95380 Turlock 90 A 15 (14 health) $410K
10 95360 Newman 87 A 4 (2 health) $386K
11 95361 Oakdale 87 A 3 (2 health) $480K
12 95326 Hughson 84 B 23 (21 health) $499K
13 95350 Modesto 75 B 0 $397K
14 95354 Modesto 75 B 0 $360K
15 95355 Modesto 75 B 0 $448K
16 95358 Modesto 75 B 0 $401K
17 95356 Modesto 74 B 1 (1 health) $496K
18 95357 Modesto 74 B 1 (1 health) $418K
19 95307 Ceres 71 B 2 (1 health) $402K
20 95351 Modesto 67 C 4 (2 health) $316K
21 95313 Crows Landing — — $596K
22 95319 Empire — — 0 $329K
23 95323 Hickman — — $523K
24 95329 La Grange — — 4 (1 health) $387K
25 95352 Modesto — — —
26 95353 Modesto — — —
27 95381 Turlock — — —
28 95385 Vernalis — — 0 —
29 95397 Modesto — — —

Recommended Buyer Guides for Stanislaus County

The guides listed here are chosen from this county's data, and the short note beside each one says why it made the list.

Overview

Stanislaus County in California covers 29 tracked ZIP records with an average Home Safety Score of B (83/100) across 20 scored records.

10 of 23 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 41 health-based violations appear in the available health breakdown.

← Back to California 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 Stanislaus County?
Stanislaus County receives an average Home Safety grade of B from its scored ZIP records (29 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Stanislaus County?
We map 26 public water systems to 29 ZIP codes in our data for Stanislaus County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Stanislaus County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Stanislaus County is sea level. Across all modeled risk factors, the estimated average additional annual cost is $2,091 per homeowner; actual costs vary by home.
How old are homes in Stanislaus County?
The median home build year in Stanislaus County is 1984. 48% 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 Stanislaus County compare to California?
Stanislaus County has an average Home Safety Score of 83/100 under model 4.0.0, which is at or above the California state average of 76/100.

How to cite this page

APA ZipCheckup. (2026). Stanislaus County, CA: HSS 83/100; 41 Health Violations. https://zipcheckup.com/county/california/stanislaus/
BibTeX
@misc{zipcheckup-county-california-stanislaus,
  author = {{ZipCheckup}},
  title  = {{Stanislaus County, CA: HSS 83/100; 41 Health Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/california/stanislaus/}
}

Page version: October 2026.

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