ZIP Codes of Miami County, KS

Population & People
Population & People
Total Population
29,801
Household Income
Household Income
Median Income
$96,547
Housing
Housing
Total Housing Units
12,279
Business & Economy
Business & Economy
Total Businesses
738
Employment
Employment
Employment Rate
62.19%
Education
Education
Bachelor's Degree+
30.98%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (5 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:913
Timezone:Central (GMT -06:00)
Local Time:2:12:13 PM
Population:29,801 [See All]
FIPS:20121
CBSA:Kansas City, MO-KS
Land Area:507 sq mi
Water Area:10 sq mi
Coordinates:38.5634, -94.8255
Quick Link:
https://www.zip-codes.com/county/ks-miami.asp
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Among Kansas's 5 wealthiest counties
#2 statewide, average median income $96,547.
Striking education divide
Bachelor's share spans 10.7% to 56.9% — a 46-point gap.

Standout ZIPs in this County


Most Populous
Paola · 12,400 people
41.6% of county total
Highest Income
Bucyrus · $164,320 median
1.7× county average
Largest Land Area
Paola · 234.8 sq mi
Spans the most ground
Fastest Growth
Bucyrus · 18.0% (10-yr)
2,318 → 2,735 residents
Most Educated
Bucyrus · 56.9% bachelor's+
963 of 1,691 adults 25+

Things worth knowing about Miami County


29,801 residents live across 6 ZIPs covering 507 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 28,936 to 29,801 from 2014 to 2024 — a +3.0% change. 4 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 66013 (Bucyrus, $164,320 median) and poorest ZIP 66064 (Osawatomie, $67,321) are 24.1 miles apart — a 2.4× income gap across local geography.

Median home values vary 4.2× across this county — from $172,100 in 66064 (Osawatomie) to $724,500 in 66013 (Bucyrus).

Density varies across the county — from 18 people/sq mi in 66026 (Fontana) to 79 in 66064 (Osawatomie).

Educational attainment ranges from 10.7% bachelor's+ in 66026 (Fontana) to 56.9% in 66013 (Bucyrus) — the breadth of educational profiles across the area.

Within Kansas, this is the #20 most populous of 106 counties and ranks #2 for median household income .

Weighted by population, the typical household earns about $89,243 across the county — reflecting what a typical resident sees, not a simple ZIP average.

31.0% of adults age 25+ hold a bachelor's degree or higher (6,331 of 20,437 reporting).

5 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Miami County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
507
square miles
Avg density
58.8
people per sq mi
Population
29,801
across 6 ZIPs
Paola
234.8 sq mi
12,400 residents
Louisburg
102.5 sq mi
7,834 residents
Osawatomie
75.5 sq mi
5,992 residents

All ZIP Codes in Miami County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
66071PaolaStandard12,400$84,142234.80.2%
66053LouisburgStandard7,834$89,096102.53.4%
66064OsawatomieStandard5,992$67,32175.5-2.1%
66013BucyrusStandard2,735$164,32046.418.0%
66026FontanaStandard840$77,85748.051.9%
66036HillsdalePO Box0.0

Adjacent & Nearby Counties