ZIP codes

ZIP codes in Webb County, Texas

Webb County has 10 ZIP codes. 9 lie entirely inside it and 1 are shared with neighboring counties, so part of their land and their people are elsewhere. About 270,063 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 10; With 1% or more of their land inside
Entirely inside: 9; 99% or more of their land
Shared with other counties: 1; Most with La Salle County (1)
Most populated ZIP: 78046; 72,951 people · Laredo
Least populated ZIP: 78371; 101 people · Oilton
Largest ZIP by land: 78019; 745 sq mi · Encinal

Map of the ZIP codes in Webb County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
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 Webb County

10 ZIP codes in Webb County, TX, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
78019	Encinal	1,836	84%	≈ 933
78040	Laredo	35,709	100%	35,709
78041	Laredo	46,550	100%	46,550
78043	Laredo	45,760	100%	45,760
78044	Ranchitos Las Lomas	220	100%	220
78045	Laredo	67,333	100%	67,333
78046	Laredo	72,951	100%	72,951
78344	Bruni	295	100%	295
78369	Mirando City	211	100%	211
78371	Oilton	101	100%	101

ZIP codes shared with other counties

These 1 ZIP codes have part of their land in another county. The first figure is the share of their land in Webb County; then, where the rest lies.

78019 (Encinal): 84% here; 16% in La Salle 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 Laredo (5), Bruni (1), Encinal (1), Mirando City (1), Oilton (1), and Ranchitos Las Lomas (1).

They start with 2 different three-digit prefixes, one per USPS sorting center: 780 and 783.

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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