COUNTY REPORT MN

Olmsted County, Minnesota

11 ZIP codes · Avg score 67/100 · Grade C

ZipCheckup grade for Olmsted County: C.

A mixed picture - some signals here are worth your attention.

Because the C for Olmsted County comes from averaging ZIP-level Home Safety Scores, its 11 ZIP reports are where the underlying data can be seen.

How Olmsted County Compares

Olmsted County67/100
Minnesota avg68/100
National avg73/100

How Olmsted County Compares

C
County Grade
67/100
Avg Safety Score
11
ZIP Codes
5
Water Systems

Olmsted County scores 1 points below the Minnesota state average (68/100) and 6 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

C
County Grade
67
Avg Safety Score
11
ZIP Codes
Best ZIP: 55920 (67/100)
Lowest ZIP: 55906 (66/100)
$301K
Median Home Value
$500
Avg Remediation (0.17% of home value)

ZIP Code Risk Map

Water Quality Map: Olmsted County, Minnesota

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: 11.5 (asthma 9.7%, diabetes 9.5%)

Modeled additional annual cost estimate per homeowner: $1,388, largest modeled factor: Flood

41% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 9.7% (national: 8.9%)
Diabetes 9.5% (national: 10.5%)
Obesity 36.4% (national: 32.4%)

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

Infrastructure Overview

1983
Median Build Year
41%
Pre-1980 Housing
36/100
Infrastructure Stress Indicator
18%
ZIPs with High Infrastructure Stress
Moderate
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: $1,388

Flood $1,140/yr
Energy Code Gap $330/yr
Water / Lead $113/yr

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

Housing Age Distribution

67,563 housing units in Olmsted County

Pre-1940 8%
1940–1959 11%
1960–1979 22%
1980–1999 26%
2000+ 32%

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 Olmsted County

$301K
Median Home Value
$500
Est. Remediation Cost
0.2%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Olmsted 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 Olmsted County residents

Asthma 9.7% (US avg: 8.9%)
Diabetes 9.5% (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 Olmsted County ZIP codes

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

Systems with the most violations in Olmsted County

2 water systems with violations in EPA records.

All ZIP Codes in Olmsted County

11 ZIP codes tracked in Olmsted County.

# ZIP Code City Safety Score Grade Violations Home Value
1 55920 Byron 67 C 0 $357K
2 55976 Stewartville 67 C 0 $278K
3 55906 Rochester 66 C 2 $350K
4 55901 Rochester — — 4 $290K
5 55902 Rochester — — 0 $430K
6 55903 Rochester — — 0 —
7 55904 Rochester — — 0 $237K
8 55905 Rochester — — 0 —
9 55929 Dover — — $300K
10 55934 Eyota — — 0 $301K
11 55960 Oronoco — — 2 $440K

Recommended Buyer Guides for Olmsted County

These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.

Overview

Olmsted County in Minnesota covers 11 tracked ZIP records with an average Home Safety Score of C (67/100) across 3 scored records.

3 of 10 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.

← Back to Minnesota 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 Olmsted County?
Olmsted County receives a grade of C. Some ZIP codes have recorded violations and residents in affected areas may want to test their water.
How many water systems serve Olmsted County?
We map 5 public water systems to 11 ZIP codes in our data for Olmsted County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Olmsted County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Olmsted County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,388 per homeowner; actual costs vary by home.
How old are homes in Olmsted County?
The median home build year in Olmsted County is 1983. 41% 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 Olmsted County compare to Minnesota?
Olmsted County has an average Home Safety Score of 67/100 under model 4.0.0, which is below the Minnesota state average of 68/100.

How to cite this page

APA ZipCheckup. (2026). Olmsted County, MN: HSS 67/100; 4 Violations. https://zipcheckup.com/county/minnesota/olmsted/
BibTeX
@misc{zipcheckup-county-minnesota-olmsted,
  author = {{ZipCheckup}},
  title  = {{Olmsted County, MN: HSS 67/100; 4 Violations}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/minnesota/olmsted/}
}

Page version: October 2026.

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