Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MN/COUNTY/OLMSTED

Olmsted County, MN ZIP codes

There are 12 ZIP codes in Olmsted County, MN, in 7 towns, from 55901 to 55976. The largest are 55901 (Rochester), 55904 (Rochester) and 55902 (Rochester). 1 more crosses into it from a neighbouring county: 55923.

The county seat is Rochester.

ZIP codes
12
Partly in it
1 more
Towns
7
County seat
Rochester
County FIPS
27109
Population
164,498
Median household income
$95,406
Land area
654 sq mi
Area code
507
Metro area
Rochester

Olmsted County ZIP codes by town

Rochester (county seat)
55901, 55902, 55903, 55904, 55905, 55906

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Olmsted County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Olmsted County.

Map of Olmsted County ZIP codes

559015590255903559045590555906559205592955932559345596055976

The ZIP codes of Olmsted County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Olmsted County in numbers

About 164,498 people live in Olmsted County, in 66,918 households, the 7th most populous of Minnesota's 87 counties. The median household income is $95,406 a year, 7% above the Minnesota median of $89,062 (US: $80,734). The median owner-occupied home is valued at $331,700 (about the same as the Minnesota median), and median gross rent is $1,370 a month. The median age is 37.8; 49.4% of adults 25 and over hold a bachelor's degree or higher (39.4% across Minnesota); the average commute takes 19 minutes.

Population164,498Olmsted164,498
Households66,918Olmsted66,918
Median age37.8Olmsted37.8Minnesota38.8US 38.9
Median household income$95,406Olmsted$95,406Minnesota$89,062US $80,734
Median home value$331,700Olmsted$331,700Minnesota$329,300US $332,700
Median gross rent$1,370Olmsted$1,370Minnesota$1,280US $1,413
Bachelor's degree or higher49.4%Olmsted49.4%Minnesota39.4%US 35.7%
Mean commute18.7 minOlmsted18.7 minMinnesota22.7 minUS 26.4 min
Population density252 / sq miOlmsted252 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Olmsted County

Largest towns in Olmsted County
TownZIP codesPopulation
Rochester 6 122,330
Stewartville 1 6,807
Byron 1 6,646
Eyota 1 1,944
Oronoco 1 1,679
Elgin 1 1,116
Dover 1 895

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Olmsted County.

Not sure you are in Olmsted County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Olmsted County, with figures

ZIP codes in Olmsted County
ZIP City Type Population Median income Median home
55901 Rochester , MN Standard 58,495 $94,607 $317,000
55902 Rochester , MN Standard 26,464 $120,611 $454,800
55903 Rochester , MN Standard 0 — —
55904 Rochester , MN Standard 29,639 $77,016 $253,600
55905 Rochester , MN Standard 0 — —
55906 Rochester , MN Standard 20,437 $93,685 $377,800
55920 Byron , MN Standard 9,271 $131,336 $372,600
55929 Dover , MN Standard 1,383 $118,977 $332,300
55932 Elgin , MN Standard 1,999 $100,078 $316,500
55934 Eyota , MN Standard 3,466 $84,952 $327,700
55960 Oronoco , MN Standard 3,375 $130,227 $481,200
55976 Stewartville , MN Standard 8,509 $87,330 $280,200

Cite this page

zipcodes.pro. “Olmsted County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mn/county/olmsted

Underlying data is public domain or openly licensed — sources, vintages and licences.