ZIP codes

ZIP codes in Clay County, Missouri

Clay County has 21 ZIP codes. 14 lie entirely inside it and 7 are shared with neighboring counties, so part of their land and their people are elsewhere. About 263,350 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 21; 2 more just touch the border (under 1% of their land)
Entirely inside: 14; 99% or more of their land
Shared with other counties: 7; Most with Clinton County (3)
Most populated ZIP: 64118; 41,984 people · Kansas City
Least populated ZIP: 64072; 205 people · Missouri City
Largest ZIP by land: 64068; 85 sq mi · Liberty

Map of the ZIP codes in Clay County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Clay County

21 ZIP codes in Clay County, MO, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
64024	Excelsior Springs	15,574	63%	≈ 14,159
64048	Holt	4,387	63%	≈ 2,947
64060	Kearney	16,488	100%	16,488
64062	Lawson	6,968	13%	≈ 1,482
64068	Liberty	37,758	100%	37,758
64072	Missouri City	205	100%	205
64077	Orrick	1,665	9.9%	≈ 173
64089	Smithville	14,380	73%	≈ 13,291
64116	Kansas City	18,046	100%	18,046
64117	Kansas City	14,919	100%	14,919
64118	Kansas City	41,984	99%	≈ 41,681
64119	Kansas City	33,199	100%	33,199
64155	Kansas City	28,824	99.5%	≈ 28,797
64156	Kansas City	7,946	100%	7,946
64157	Kansas City	23,030	100%	23,030
64158	Kansas City	7,317	100%	7,317
64161	Kansas City	292	100%	292
64165	Kansas City	212	100%	212
64166	Kansas City	270	100%	270
64167	Kansas City	243	100%	243
64492	Trimble	1,713	22%	≈ 844

They also touch the county with under 1% of their land, so they aren’t counted: 64150 and 64151.

ZIP codes shared with other counties

These 7 ZIP codes have part of their land in another county. The first figure is the share of their land in Clay County; then, where the rest lies.

64024 (Excelsior Springs): 63% here; 37% in Ray County.
64048 (Holt): 63% here; 37% in Clinton County.
64062 (Lawson): 13% here; 73% in Ray County, 11% in Clinton County, and 2.3% in Caldwell County.
64077 (Orrick): 9.9% here; 90% in Ray County.
64089 (Smithville): 73% here; 27% in Platte County.
64118 (Kansas City): 99% here; 1.1% in Platte County.
64492 (Trimble): 22% here; 72% in Clinton County and 6.4% in Platte County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Kansas City (12), Excelsior Springs (1), Holt (1), Kearney (1), Lawson (1), and Liberty (1); 10 places in all.

They start with 3 different three-digit prefixes, one per USPS sorting center: 640, 641, and 644.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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