ZIP codes and county lines in Florida

137 of the 1013 ZIP code areas in Florida, or 13.5%, overlap more than one county. If your territories, tax rules or service areas are set by county and your list is by ZIP, these are the rows where the two disagree.

ZIP code areas: 1,013
In more than one county: 137
At least 5% in a second county: 105
Cross a state line: 0

How Florida compares

Florida ranks 39 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 63 of its counties have at least one split ZIP code area along an edge.

Counties with the most split ZIP code areas

Lake County: 13 ZIP codes shared with another county
Polk County: 12 ZIP codes shared with another county
Hillsborough County: 10 ZIP codes shared with another county
Pasco County: 10 ZIP codes shared with another county
Bradford County: 9 ZIP codes shared with another county

Every split ZIP code area in Florida

Each row is one ZCTA and the counties its land falls in, largest share first. Counties in another state are marked with that state. Sort by the share outside the main county to put the most evenly divided ones first.

	Share of land by county
32008	Lafayette County 45.9% Gilchrist County 24.8% Suwannee County 23.8% Dixie County 5.4%	54.1%	4
32024	Columbia County 81.4% Suwannee County 18.6%	18.6%	2
32026	Bradford County 62.2% Union County 37.8%	37.8%	2
32043	Clay County 92.7% Putnam County 7.3%	7.3%	2
32044	Bradford County 93.3% Alachua County 6.7%	6.7%	2
32054	Union County 91.1% Bradford County 8.9%	8.9%	2
32055	Columbia County 100.0% Suwannee County under 0.1%	under 0.1%	2
32058	Bradford County 86.7% Union County 10.5% Clay County 2.8%	13.3%	3
32080	St. Johns County 98.8% Flagler County 1.2%	1.2%	2
32081	St. Johns County 90.3% Duval County 9.7%	9.7%	2
32083	Union County 98.0% Bradford County 1.9%	1.9%	2
32091	Bradford County 84.5% Clay County 15.5%	15.5%	2
32094	Suwannee County 88.5% Columbia County 11.5%	11.5%	2
32096	Columbia County 55.3% Hamilton County 43.0% Suwannee County 1.6%	44.7%	3
32102	Lake County 62.0% Volusia County 38.0%	38.0%	2
32131	Putnam County 92.3% St. Johns County 7.7%	7.7%	2
32134	Marion County 80.9% Putnam County 17.8% Lake County 1.3%	19.1%	3
32136	Flagler County 90.6% Volusia County 9.4%	9.4%	2
32140	Putnam County 89.8% Clay County 10.2%	10.2%	2
32145	St. Johns County 99.3% Putnam County 0.7%	0.7%	2
32159	Lake County 84.5% Sumter County 15.5%	15.5%	2
32162	Sumter County 84.6% Marion County 15.4%	15.4%	2
32163	Sumter County 89.7% Lake County 10.3%	10.3%	2
32174	Volusia County 70.6% Flagler County 29.4%	29.4%	2
32180	Volusia County 90.7% Flagler County 9.3%	9.3%	2
32195	Marion County 85.3% Lake County 14.7%	14.7%	2
32224	Duval County 91.6% St. Johns County 8.4%	8.4%	2
32234	Duval County 45.7% Clay County 28.9% Baker County 21.1% Nassau County 4.3%	54.3%	4
32259	St. Johns County 98.5% Duval County 1.5%	1.5%	2
32321	Liberty County 97.8% Franklin County 2.3%	2.3%	2
32331	Madison County 72.6% Taylor County 14.3% Jefferson County 13.1%	27.4%	3
32336	Taylor County 47.5% Jefferson County 40.2% Madison County 12.3%	52.5%	3
32346	Wakulla County 66.8% Franklin County 33.2%	33.2%	2
32358	Wakulla County 84.9% Franklin County 15.1%	15.1%	2
32359	Dixie County 61.1% Taylor County 38.9%	38.9%	2
32413	Bay County 99.6% Walton County 0.4%	0.4%	2
32420	Jackson County 97.7% Washington County 2.3%	2.3%	2
32425	Holmes County 86.5% Washington County 13.5%	13.5%	2
32428	Washington County 97.4% Bay County 1.7% Jackson County 0.9%	2.6%	3
32431	Jackson County 83.7% Washington County 16.3%	16.3%	2
32437	Washington County 77.4% Bay County 22.6%	22.6%	2
32438	Bay County 77.3% Calhoun County 17.1% Jackson County 4.6% Washington County 0.9%	22.7%	4
32440	Jackson County 69.4% Holmes County 30.6%	30.6%	2
32442	Jackson County 89.4% Calhoun County 10.6%	10.6%	2
32448	Jackson County 99.3% Calhoun County 0.7%	0.7%	2
32455	Walton County 67.6% Holmes County 32.4%	32.4%	2
32456	Gulf County 74.3% Bay County 18.2% Franklin County 7.5%	25.7%	3
32462	Washington County 82.5% Walton County 16.0% Bay County 1.5%	17.5%	3
32464	Holmes County 82.0% Walton County 18.0%	18.0%	2
32466	Bay County 65.0% Calhoun County 24.6% Washington County 10.3%	35.0%	3
32531	Okaloosa County 87.9% Santa Rosa County 12.1%	12.1%	2
32539	Okaloosa County 88.7% Walton County 11.3%	11.3%	2
32561	Escambia County 61.1% Santa Rosa County 38.9%	38.9%	2
32564	Santa Rosa County 50.3% Okaloosa County 49.7%	49.7%	2
32567	Okaloosa County 65.6% Walton County 34.4%	34.4%	2
32578	Okaloosa County 97.4% Walton County 2.6%	2.6%	2
32618	Alachua County 80.8% Levy County 19.2%	19.2%	2
32622	Bradford County 86.2% Alachua County 13.8%	13.8%	2
32640	Alachua County 57.1% Putnam County 42.9%	42.9%	2
32643	Alachua County 52.4% Gilchrist County 35.0% Columbia County 12.7%	47.6%	3
32656	Clay County 95.2% Bradford County 4.8%	4.8%	2
32666	Putnam County 65.3% Clay County 15.6% Alachua County 12.6% Bradford County 6.5%	34.7%	4
32667	Alachua County 53.5% Marion County 46.5%	46.5%	2
32668	Levy County 81.3% Marion County 18.7%	18.7%	2
32669	Alachua County 83.3% Gilchrist County 12.5% Levy County 4.2%	16.7%	3
32693	Gilchrist County 75.0% Levy County 25.0%	25.0%	2
32696	Levy County 79.8% Marion County 20.2%	20.2%	2
32702	Lake County 77.0% Marion County 23.1%	23.1%	2
32703	Orange County 91.0% Seminole County 9.1%	9.1%	2
32720	Volusia County 55.9% Lake County 44.1%	44.1%	2
32751	Orange County 74.7% Seminole County 25.3%	25.3%	2
32754	Brevard County 78.2% Volusia County 21.8%	21.8%	2
32757	Lake County 66.8% Orange County 33.2%	33.2%	2
32776	Lake County 86.1% Orange County 13.9%	13.9%	2
32784	Marion County 55.8% Lake County 44.2%	44.2%	2
32792	Seminole County 50.2% Orange County 49.8%	49.8%	2
32810	Orange County 99.8% Seminole County 0.1%	0.1%	2
32948	Indian River County 78.8% Brevard County 21.2%	21.2%	2
33034	Miami-Dade County 53.3% Monroe County 46.7%	46.7%	2
33438	Martin County 64.7% Palm Beach County 35.3%	35.3%	2
33440	Hendry County 95.3% Palm Beach County 4.7%	4.7%	2
33458	Palm Beach County 81.0% Martin County 19.0%	19.0%	2
33469	Martin County 71.6% Palm Beach County 28.4%	28.4%	2
33471	Glades County 100.0% Hendry County under 0.1%	under 0.1%	2
33478	Palm Beach County 81.7% Martin County 18.3%	18.3%	2
33523	Pasco County 92.4% Hernando County 7.6%	7.6%	2
33540	Pasco County 91.6% Hillsborough County 8.4%	8.4%	2
33547	Hillsborough County 97.7% Polk County 2.3%	2.3%	2
33548	Hillsborough County 96.0% Pasco County 4.0%	4.0%	2
33549	Hillsborough County 81.0% Pasco County 19.0%	19.0%	2
33556	Hillsborough County 53.4% Pasco County 46.6%	46.6%	2
33558	Hillsborough County 64.1% Pasco County 35.9%	35.9%	2
33559	Hillsborough County 58.5% Pasco County 41.5%	41.5%	2
33597	Sumter County 55.6% Hernando County 22.3% Pasco County 22.1%	44.4%	3
33598	Hillsborough County 92.5% Manatee County 7.5%	7.5%	2
33809	Polk County 99.8% Pasco County 0.2%	0.2%	2
33810	Polk County 73.4% Hillsborough County 26.6%	26.6%	2
33825	Highlands County 67.7% Polk County 32.3%	32.3%	2
33834	Hardee County 70.6% Polk County 29.4%	29.4%	2
33849	Polk County 98.4% Pasco County 1.6%	1.6%	2
33860	Polk County 98.7% Hillsborough County 1.3%	1.3%	2
33865	Hardee County 97.0% DeSoto County 3.0%	3.0%	2
33896	Osceola County 64.2% Polk County 35.8%	35.8%	2
33897	Polk County 99.0% Osceola County 1.0%	1.0%	2
33898	Polk County 88.7% Osceola County 11.3%	11.3%	2
33917	Lee County 72.6% Charlotte County 27.4%	27.4%	2
33921	Lee County 80.5% Charlotte County 19.5%	19.5%	2
33935	Hendry County 58.2% Glades County 41.8%	41.8%	2
33936	Hendry County 68.1% Lee County 31.9%	31.9%	2
33955	Charlotte County 98.5% Lee County 1.5%	1.5%	2
33960	Highlands County 72.5% Glades County 27.4%	27.4%	2
34110	Collier County 94.8% Lee County 5.2%	5.2%	2
34119	Collier County 98.2% Lee County 1.8%	1.8%	2
34134	Lee County 90.3% Collier County 9.7%	9.7%	2
34135	Lee County 100.0% Collier County under 0.1%	under 0.1%	2
34141	Collier County 75.0% Monroe County 20.3% Miami-Dade County 4.6%	24.9%	3
34142	Collier County 82.1% Hendry County 17.9%	17.9%	2
34223	Sarasota County 94.8% Charlotte County 5.2%	5.2%	2
34224	Charlotte County 94.4% Sarasota County 5.6%	5.6%	2
34228	Sarasota County 57.3% Manatee County 42.7%	42.7%	2
34240	Sarasota County 99.9% Manatee County 0.1%	0.1%	2
34243	Manatee County 80.4% Sarasota County 19.6%	19.6%	2
34251	Manatee County 99.2% Sarasota County 0.8%	0.8%	2
34266	DeSoto County 93.3% Sarasota County 6.7%	6.7%	2
34269	DeSoto County 100.0% Charlotte County under 0.1%	under 0.1%	2
34431	Marion County 55.2% Levy County 44.8%	44.8%	2
34449	Levy County 93.8% Citrus County 6.2%	6.2%	2
34601	Hernando County 99.8% Citrus County 0.2%	0.2%	2
34714	Lake County 99.8% Polk County 0.2%	0.2%	2
34731	Lake County 99.4% Sumter County 0.6%	0.6%	2
34747	Osceola County 94.7% Orange County 5.3%	5.3%	2
34759	Polk County 65.2% Osceola County 34.8%	34.8%	2
34787	Orange County 81.2% Lake County 18.8%	18.8%	2
34957	Martin County 62.4% St. Lucie County 37.6%	37.6%	2
34972	Okeechobee County 79.7% Osceola County 14.4% St. Lucie County 5.8%	20.3%	3
34974	Glades County 53.1% Okeechobee County 22.1% Martin County 15.0% Highlands County 9.8%	46.9%	4
34990	Martin County 98.2% St. Lucie County 1.8%	1.8%	2

What to do with this

If a ZIP code in your list is split, the ZIP alone cannot tell you which county an address is in. For most work that is fine. It matters when the county decides something: a sales tax rate, a licence, a franchise agreement written by county, or a service area somebody promised by county name.

The ZIP list audit checks your own list against the same Census data in your browser, and the ZIP spreadsheet comparison covers when a ZIP list is enough and when it is not.

What these numbers are, and are not

A ZCTA is not quite a ZIP code. ZIP Code Tabulation Areas are the Census Bureau's approximations of ZIP code areas, built by grouping census blocks by the ZIP codes of the addresses in them. USPS ZIP codes are delivery routes, not areas, and the two do not always match.
Some ZIP codes have no ZCTA at all. PO box ZIPs, ZIPs for a single building or a single large organisation, and military ZIPs usually have no area of their own, so they cannot be split across counties here and will not match any area in a map.
Land share is not population share. A ZCTA with 20% of its land in a second county might have almost none of its people there, or most of them. The shares here measure area, which is what the Census file publishes.
Tiny overlaps are included. A ZCTA counts as overlapping a county if the Census file lists any part of it there, including slivers along a road or river. That is why the share with at least 5% of land in a second county is shown alongside.

Source: U.S. Census Bureau, 2020 ZCTA to County relationship file, public domain. Counts use 2020 ZCTAs and 2020 county boundaries. ZIP codes added by USPS since then are not in it, and Connecticut's counties have since been replaced by planning regions in Census data.

Route by the boundary, not the ZIP

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