Plain

County ZIP codes · Kansas · FIPS 20045

Douglas County, KS ZIP Codes

Douglas County, Kansas has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Douglas County and 4 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $55,955 in 66044 (Lawrence) to $114,868 in 66025 (Eudora) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Douglas County?

66006 · Baldwin City: $81k66021 · Edgerton: $88k66025 · Eudora: $115k66044 · Lawrence: $56k66045 · Lawrence: $14k66046 · Lawrence: $66k66047 · Lawrence: $65k66049 · Lawrence: $90k66050 · Lecompton: $92k66092 · Wellsville: $88k66409 · Berryton: $105k66524 · Overbrook: $84k665246609266006660256640966021660446604966047660466605066006 · Baldwin City: $81k66021 · Edgerton: $88k66025 · Eudora: $115k66044 · Lawrence: $56k66045 · Lawrence: $14k66046 · Lawrence: $66k66047 · Lawrence: $65k66049 · Lawrence: $90k66050 · Lecompton: $92k66092 · Wellsville: $88k66409 · Berryton: $105k66524 · Overbrook: $84k665246609266006660256640966021660446604966047660466605066006 · Baldwin City: $81k66021 · Edgerton: $88k66025 · Eudora: $115k66044 · Lawrence: $56k66045 · Lawrence: $14k66046 · Lawrence: $66k66047 · Lawrence: $65k66049 · Lawrence: $90k66050 · Lecompton: $92k66092 · Wellsville: $88k66409 · Berryton: $105k66524 · Overbrook: $84k6652466092660066602566409660216604466049660476604666050
The residential ZIP codes of Douglas County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $65,478 and $88,125.

They carry 8 postal town names: Lawrence, Eudora, Baldwin City, Wellsville, Berryton, Edgerton, Overbrook, Lecompton.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 12 residential ZIP codes in Douglas County

8 ZIP codes lie mainly in Douglas County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Douglas County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66049 Lawrence 32,015 708 $90k $393k 100%
66044 Lawrence 28,820 449 $56k $235k 38%
66047 Lawrence 20,473 352 $65k $342k 100%
66046 Lawrence 19,658 481 $66k $234k 100%
66025 Eudora 8,083 109 $115k $311k 69%
66006 Baldwin City 8,013 74 $81k $346k 95%
66045 Lawrence 1,925 1,728 $14k – 100%
66050 Lecompton 1,761 44 $92k $263k 99%

Partly in Douglas County

Residential ZIP codes mainly in another county that reach at least 1% into Douglas County, by their share here
In this county
66524 Overbrook 2,473 19 $84k $173k 44%
66409 Berryton 3,133 45 $105k $318k 24%
66092 Wellsville 4,351 49 $88k $242k 15%
66021 Edgerton 2,819 55 $88k $242k 9%

Download the 12 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

8 ZIP codes of Douglas County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Douglas County and in the neighboring counties
ZIPIn DouglasElsewhere
6604438%Jefferson County 33%; Leavenworth County 29%
6602569%Johnson County 31%
6600695%Franklin County 5%
6609215%Franklin County 65%; Miami County 21%
6640924%Shawnee County 74%; Osage County 2%
660219%Johnson County 64%; Miami County 27%
6652444%Osage County 51%; Shawnee County 3%; Franklin County 2%
6605099%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Douglas County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Douglas County's ZIP codes use 3 prefixes: 660, 664 and 665.

Three-digit prefixes of Douglas County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Douglas County's
PrefixSectional centerHereAll codes
660 Kansas City, MO (SCF 640) 10 71
664 Kansas City, MO (SCF 640) 1 37
665 Kansas City, MO (SCF 640) 1 44

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.