ZIP codes

ZIP codes in Washington County, Arkansas

Washington County has 20 ZIP codes. 9 lie entirely inside it and 11 are shared with neighboring counties, so part of their land and their people are elsewhere. About 257,781 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 20; With 1% or more of their land inside
Entirely inside: 9; 99% or more of their land
Shared with other counties: 11; Most with Benton County (6)
Most populated ZIP: 72764; 58,719 people · Springdale
Least populated ZIP: 72729; 154 people · Evansville
Largest ZIP by land: 72959; 200 sq mi · Winslow

Map of the ZIP codes in Washington 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 Washington County

20 ZIP codes in Washington County, AR, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
72701	Fayetteville	49,835	100%	49,835
72703	Fayetteville	35,896	95%	≈ 35,855
72704	Fayetteville	32,497	99%	≈ 32,439
72717	Morrow	1,068	100%	1,068
72727	Goshen	6,703	32%	≈ 4,429
72729	Evansville	154	100%	154
72730	Farmington	11,570	100%	11,570
72734	Highfill	8,694	1.2%	≈ 197
72738	Hindsville	2,688	13%	≈ 1,278
72744	Lincoln	5,520	100%	5,520
72749	Morrow	296	100%	296
72753	Prairie Grove	10,744	100%	10,744
72761	Siloam Springs	24,745	4.7%	≈ 216
72762	Springdale	46,092	79%	≈ 39,488
72764	Springdale	58,719	91%	≈ 54,432
72769	Cincinnati	907	100%	907
72773	Wesley	1,381	3.0%	≈ 116
72774	West Fork	7,082	100%	7,082
72948	—	334	3.4%	≈ 12
72959	Winslow	2,972	59%	≈ 2,143

ZIP codes shared with other counties

These 11 ZIP codes have part of their land in another county. The first figure is the share of their land in Washington County; then, where the rest lies.

72703 (Fayetteville): 95% here; 4.8% in Madison County.
72704 (Fayetteville): 99% here; 1.4% in Benton County.
72727 (Goshen): 32% here; 63% in Madison County and 4.5% in Franklin County.
72734 (Highfill): 1.2% here; 99% in Benton County.
72738 (Hindsville): 13% here; 80% in Madison County and 7.1% in Benton County.
72761 (Siloam Springs): 4.7% here; 95% in Benton County.
72762 (Springdale): 79% here; 21% in Benton County.
72764 (Springdale): 91% here; 8.9% in Benton County.
72773 (Wesley): 3.0% here; 97% in Madison County.
72948: 3.4% here; 97% in Crawford County.
72959 (Winslow): 59% here; 25% in Crawford County and 16% in Franklin 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 Fayetteville (3), Morrow (2), Springdale (2), Cincinnati (1), Evansville (1), and Farmington (1); 15 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 727 and 729.

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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