ZIP Codes of Coffey County, KS

Population & People
Population & People
Total Population
8,294
Household Income
Household Income
Median Income
$64,025
Housing
Housing
Total Housing Units
4,041
Business & Economy
Business & Economy
Total Businesses
204
Employment
Employment
Employment Rate
55.02%
Education
Education
Bachelor's Degree+
20.66%
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 (6 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:620 / 785
Timezone:Central (GMT -06:00)
Local Time:2:12:11 PM
Population:8,294 [See All]
FIPS:20031
Land Area:728 sq mi
Water Area:28 sq mi
Coordinates:38.1924, -95.7391
Quick Link:
https://www.zip-codes.com/county/ks-coffey.asp
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Kansas's #46 most populous county
8,294 residents across 6 ZIPs — #46 of 106 Kansas counties.

Standout ZIPs in this County


Most Populous
Burlington · 3,654 people
44.1% of county total
Highest Income
Lebo · $75,667 median
1.2× county average
Largest Land Area
Burlington · 178.3 sq mi
Spans the most ground
Fastest Growth
Waverly · 3.9% (10-yr)
1,296 → 1,347 residents
Most Educated
Lebo · 24.0% bachelor's+
253 of 1,053 adults 25+

Things worth knowing about Coffey County


8,294 residents live across 6 ZIPs covering 728 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 8,680 to 8,294 from 2014 to 2024 — a -4.4% change. 2 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 66856 (Lebo, $75,667 median) and poorest ZIP 66758 (Neosho Falls, $50,750) are 28.3 miles apart — a 1.5× income gap across local geography.

Median home values vary 2.4× across this county — from $73,000 in 66758 (Neosho Falls) to $175,500 in 66839 (Burlington).

Density varies across the county — from 4 people/sq mi in 66852 (Gridley) to 20 in 66839 (Burlington).

Educational attainment ranges from 14.9% bachelor's+ in 66857 (Le Roy) to 24.0% in 66856 (Lebo) — the breadth of educational profiles across the area.

Within Kansas, this is the #46 most populous of 106 counties and ranks #67 for median household income .

Weighted by population, the typical household earns about $66,193 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.7% of adults age 25+ hold a bachelor's degree or higher (1,233 of 5,969 reporting).

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

Stories about Coffey 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
728
square miles
Avg density
11.4
people per sq mi
Population
8,294
across 6 ZIPs
Burlington
178.3 sq mi
3,654 residents
Gridley
143.2 sq mi
587 residents
Waverly
137.9 sq mi
1,347 residents

All ZIP Codes in Coffey County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
66839BurlingtonStandard3,654$63,077178.3-5.0%
66856LeboStandard1,583$75,667131.9-7.0%
66871WaverlyStandard1,347$71,094137.93.9%
66857Le RoyStandard872$62,14380.0-14.1%
66852GridleyStandard587$61,417143.28.5%
66758Neosho FallsStandard251$50,75056.8-10.4%

Adjacent & Nearby Counties