ZIP Codes of Dewitt County, IL

Population & People
Population & People
Total Population
15,064
Household Income
Household Income
Median Income
$77,747
Housing
Housing
Total Housing Units
7,151
Business & Economy
Business & Economy
Total Businesses
341
Employment
Employment
Employment Rate
59.35%
Education
Education
Bachelor's Degree+
23.35%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:8 ZIP Codes (7 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:217 / 309 / 447 / 861
Timezone:Central (GMT -06:00)
Local Time:2:11:59 PM
Population:15,064 [See All]
FIPS:17039
Land Area:409 sq mi
Water Area:8 sq mi
Coordinates:40.1712, -88.9081
Quick Link:
https://www.zip-codes.com/county/il-dewitt.asp
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Illinois's #70 most populous county
15,064 residents across 8 ZIPs — #70 of 102 Illinois counties.

Standout ZIPs in this County


Most Populous
Clinton · 9,033 people
60.0% of county total
Highest Income
Dewitt · $93,125 median
1.2× county average
Largest Land Area
Clinton · 138.8 sq mi
Spans the most ground
Fastest Growth
Farmer City · -8.3% (10-yr)
2,856 → 2,620 residents
Most Educated
Clinton · 23.8% bachelor's+
1,535 of 6,448 adults 25+

Things worth knowing about Dewitt County


15,064 residents live across 8 ZIPs covering 409 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 16,489 to 15,064 from 2014 to 2024 — a -8.6% change. 4 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 61735 (Dewitt, $93,125 median) and poorest ZIP 61778 (Waynesville, $59,868) are 14.6 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.4× across this county — from $112,900 in 61749 (Kenney) to $162,500 in 61735 (Dewitt).

Density varies 72× across the county — from 17 people/sq mi in 61735 (Dewitt) to 1,209 in 61750 (Lane).

Educational attainment ranges from 18.9% bachelor's+ in 61882 (Weldon) to 32.6% in 61778 (Waynesville) — the breadth of educational profiles across the area.

Within Illinois, this is the #70 most populous of 102 counties and ranks #33 for median household income .

Weighted by population, the typical household earns about $73,849 across the county — reflecting what a typical resident sees, not a simple ZIP average.

23.3% of adults age 25+ hold a bachelor's degree or higher (2,506 of 10,733 reporting).

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

Stories about Dewitt County


Population decline

Dewitt County lost 8.6% of residents between 2014 and 2024. ZIPs that shed the largest share:

Dewitt
-34.3%
548 → 360 residents
Waynesville
-31.6%
800 → 547 residents
Clinton
-11.1%
10,161 → 9,033 residents

All ZIP Codes in Dewitt County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
61727ClintonStandard9,033$70,063138.8-11.1%
61842Farmer CityStandard2,620$80,117103.2-8.3%
61777WapellaStandard956$90,25036.722.6%
61882WeldonStandard777$80,13945.814.3%
61749KenneyStandard653$70,66733.618.9%
61778WaynesvilleStandard547$59,86829.0-31.6%
61735DewittStandard360$93,12521.5-34.3%
61750LanePO Box1180.12.6%

Adjacent & Nearby Counties