ZIP codes

ZIP codes in Boone County, Kentucky

Boone County has 9 ZIP codes. 4 lie entirely inside it and 5 are shared with neighboring counties, so part of their land and their people are elsewhere. About 138,581 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 9; With 1% or more of their land inside
Entirely inside: 4; 99% or more of their land
Shared with other counties: 5; Most with Kenton County (4)
Most populated ZIP: 41042; 57,634 people · Florence
Least populated ZIP: 41080; 1,819 people · Petersburg
Largest ZIP by land: 41091; 56 sq mi · Union

Map of the ZIP codes in Boone 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 Boone County

9 ZIP codes in Boone County, KY, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
41005	Burlington	25,718	100%	25,718
41018	Erlanger	28,940	23%	≈ 1,161
41030	Crittenden	6,162	7.5%	≈ 267
41042	Florence	57,634	95%	≈ 55,433
41048	Francisville	16,211	100%	16,211
41080	Petersburg	1,819	100%	1,819
41091	Union	25,244	100%	25,244
41092	Verona	3,135	65%	≈ 2,140
41094	Walton	14,486	63%	≈ 10,588

ZIP codes shared with other counties

These 5 ZIP codes have part of their land in another county. The first figure is the share of their land in Boone County; then, where the rest lies.

41018 (Erlanger): 23% here; 77% in Kenton County.
41030 (Crittenden): 7.5% here; 62% in Grant County and 29% in Kenton County.
41042 (Florence): 95% here; 5.4% in Kenton County.
41092 (Verona): 65% here; 33% in Gallatin County and 1.8% in Grant County.
41094 (Walton): 63% here; 37% in Kenton 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 Burlington (1), Crittenden (1), Erlanger (1), Florence (1), Francisville (1), and Petersburg (1); 9 places in all.

All 9 start with the same three digits, 410: the prefix of the USPS sorting center that handles them.

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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