ZIP codes and county lines in West Virginia

180 of the 741 ZIP code areas in West Virginia, or 24.3%, 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: 741
In more than one county: 180
At least 5% in a second county: 144
Cross a state line: 3

How West Virginia compares

West Virginia ranks 29 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 55 of its counties have at least one split ZIP code area along an edge. 3 of its ZIP code areas also reach into Virginia, so a ZIP list that is meant to stop at the state line does not.

Counties with the most split ZIP code areas

Nicholas County: 15 ZIP codes shared with another county
Gilmer County: 13 ZIP codes shared with another county
Jackson County: 12 ZIP codes shared with another county
Kanawha County: 12 ZIP codes shared with another county
Braxton County: 11 ZIP codes shared with another county

Every split ZIP code area in West Virginia

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
20135	Clarke County, VA 60.7% Loudoun County, VA 38.5% Jefferson County 0.7%	39.3%	3
24604	Tazewell County, VA 80.0% McDowell County 20.1%	20.1%	2
24622	Buchanan County, VA 53.2% Tazewell County, VA 34.2% McDowell County 12.7%	46.8%	3
24736	Wyoming County 52.0% Mercer County 48.0%	48.0%	2
24747	Mercer County 97.3% McDowell County 2.7%	2.7%	2
24801	Wyoming County 52.8% McDowell County 47.3%	47.3%	2
24828	McDowell County 86.2% Wyoming County 13.8%	13.8%	2
24844	McDowell County 71.5% Wyoming County 28.6%	28.6%	2
24846	McDowell County 64.2% Mingo County 35.8%	35.8%	2
24851	Mingo County 99.3% Wyoming County 0.7%	0.7%	2
24910	Greenbrier County 44.4% Summers County 32.5% Monroe County 23.1%	55.6%	3
24918	Monroe County 99.2% Summers County 0.8%	0.8%	2
24925	Greenbrier County 73.3% Monroe County 26.6%	26.6%	2
24963	Monroe County 83.3% Summers County 16.7%	16.7%	2
24970	Greenbrier County 96.1% Monroe County 3.9%	3.9%	2
24976	Monroe County 90.4% Greenbrier County 9.6%	9.6%	2
24981	Summers County 85.7% Monroe County 14.3%	14.3%	2
24985	Monroe County 78.8% Summers County 21.2%	21.2%	2
24986	Greenbrier County 96.9% Pocahontas County 3.1%	3.1%	2
25003	Kanawha County 70.5% Lincoln County 29.4% Boone County 0.1%	29.5%	3
25036	Fayette County 99.4% Kanawha County 0.6%	0.6%	2
25043	Clay County 87.1% Nicholas County 12.9%	12.9%	2
25045	Kanawha County 78.1% Roane County 13.9% Clay County 8.0%	21.9%	3
25047	Boone County 96.8% Logan County 3.2%	3.2%	2
25059	Fayette County 51.9% Nicholas County 48.1%	48.1%	2
25063	Braxton County 57.3% Clay County 40.5% Nicholas County 2.2%	42.7%	3
25071	Kanawha County 91.3% Roane County 8.7%	8.7%	2
25082	Putnam County 51.6% Mason County 48.4%	48.4%	2
25083	Kanawha County 62.4% Fayette County 37.6%	37.6%	2
25108	Boone County 100.0% Logan County under 0.1%	under 0.1%	2
25111	Clay County 55.9% Nicholas County 44.1%	44.1%	2
25123	Mason County 80.8% Putnam County 19.2%	19.2%	2
25124	Putnam County 93.1% Kanawha County 6.1% Jackson County 0.8%	6.9%	3
25125	Clay County 92.7% Nicholas County 7.3%	7.3%	2
25136	Fayette County 93.2% Kanawha County 6.8%	6.8%	2
25141	Clay County 95.2% Calhoun County 4.8%	4.8%	2
25143	Kanawha County 67.9% Putnam County 32.1%	32.1%	2
25164	Clay County 64.8% Roane County 35.2%	35.2%	2
25177	Kanawha County 93.6% Putnam County 6.4%	6.4%	2
25202	Kanawha County 52.1% Lincoln County 47.9%	47.9%	2
25209	Boone County 52.0% Raleigh County 48.0%	48.0%	2
25235	Calhoun County 88.8% Clay County 9.4% Braxton County 1.8%	11.2%	3
25239	Jackson County 83.8% Mason County 16.1%	16.1%	2
25241	Jackson County 71.0% Mason County 28.9%	28.9%	2
25243	Roane County 96.2% Jackson County 3.8%	3.8%	2
25244	Jackson County 67.1% Roane County 32.9%	32.9%	2
25245	Jackson County 84.9% Putnam County 15.1%	15.1%	2
25248	Jackson County 98.3% Kanawha County 1.7%	1.7%	2
25252	Jackson County 55.5% Roane County 26.7% Wirt County 17.8%	44.5%	3
25259	Roane County 100.0% Calhoun County under 0.1%	under 0.1%	2
25264	Mason County 54.9% Jackson County 45.1%	45.1%	2
25267	Gilmer County 90.5% Calhoun County 9.5%	9.5%	2
25270	Roane County 90.1% Wirt County 9.9%	9.9%	2
25320	Kanawha County 100.0% Jackson County under 0.1%	under 0.1%	2
25422	Morgan County 95.2% Hampshire County 4.8%	4.8%	2
25427	Berkeley County 87.8% Morgan County 12.2%	12.2%	2
25430	Jefferson County 91.0% Berkeley County 9.0%	9.0%	2
25434	Hampshire County 85.9% Morgan County 14.1%	14.1%	2
25443	Jefferson County 89.8% Berkeley County 10.2%	10.2%	2
25504	Cabell County 90.1% Wayne County 9.9%	9.9%	2
25505	Lincoln County 58.3% Logan County 41.7%	41.7%	2
25506	Lincoln County 83.8% Cabell County 16.2%	16.2%	2
25508	Logan County 84.3% Boone County 15.7%	15.7%	2
25510	Cabell County 49.5% Lincoln County 26.9% Putnam County 23.6%	50.5%	3
25520	Cabell County 55.4% Mason County 44.6%	44.6%	2
25523	Lincoln County 89.0% Putnam County 11.0%	11.0%	2
25524	Lincoln County 71.0% Logan County 23.3% Wayne County 5.7%	29.0%	3
25526	Putnam County 98.6% Lincoln County 1.1% Mason County 0.3%	1.4%	3
25529	Boone County 94.9% Lincoln County 5.1%	5.1%	2
25541	Cabell County 80.4% Mason County 19.6%	19.6%	2
25565	Lincoln County 58.8% Boone County 41.2%	41.2%	2
25650	Logan County 80.8% Mingo County 19.1%	19.1%	2
25674	Mingo County 73.8% Wayne County 26.2%	26.2%	2
25699	Wayne County 75.2% Lincoln County 24.9%	24.9%	2
25701	Cabell County 74.1% Wayne County 25.9%	25.9%	2
25704	Wayne County 94.1% Cabell County 5.9%	5.9%	2
25811	Raleigh County 99.8% Wyoming County 0.2%	0.2%	2
25825	Raleigh County 85.5% Summers County 14.4%	14.4%	2
25841	Mercer County 89.0% Summers County 10.9%	10.9%	2
25864	Fayette County 86.3% Raleigh County 13.7%	13.7%	2
25880	Raleigh County 69.3% Fayette County 30.7%	30.7%	2
25902	Raleigh County 75.0% Mercer County 25.0%	25.0%	2
25951	Summers County 88.9% Raleigh County 11.1%	11.1%	2
25962	Fayette County 62.2% Greenbrier County 37.8%	37.8%	2
25969	Summers County 99.7% Raleigh County 0.3%	0.3%	2
25976	Fayette County 42.9% Summers County 40.4% Greenbrier County 16.7%	57.1%	3
25979	Summers County 92.9% Mercer County 7.1%	7.1%	2
25981	Greenbrier County 72.2% Nicholas County 27.8%	27.8%	2
26003	Ohio County 61.5% Marshall County 34.4% Brooke County 4.2%	38.5%	3
26032	Brooke County 89.5% Ohio County 10.5%	10.5%	2
26036	Marshall County 99.9% Ohio County 0.1%	0.1%	2
26055	Marshall County 72.3% Wetzel County 27.7%	27.7%	2
26062	Hancock County 76.7% Brooke County 23.3%	23.3%	2
26137	Gilmer County 44.1% Calhoun County 34.5% Ritchie County 21.4%	55.9%	3
26138	Calhoun County 55.9% Wirt County 44.1%	44.1%	2
26141	Calhoun County 52.8% Wirt County 47.2%	47.2%	2
26143	Wirt County 85.2% Wood County 7.0% Ritchie County 5.1% Jackson County 2.7%	14.8%	4
26146	Tyler County 62.7% Pleasants County 37.3%	37.3%	2
26147	Calhoun County 92.3% Gilmer County 7.7%	7.7%	2
26152	Calhoun County 70.5% Wirt County 29.5%	29.5%	2
26155	Wetzel County 85.3% Tyler County 12.7% Marshall County 2.0%	14.7%	3
26159	Wetzel County 67.8% Tyler County 32.2%	32.2%	2
26164	Jackson County 97.2% Wood County 2.8%	2.8%	2
26170	Pleasants County 96.3% Ritchie County 3.6% Tyler County under 0.1%	3.7%	3
26180	Wood County 88.1% Wirt County 11.9%	11.9%	2
26184	Wood County 86.9% Pleasants County 13.1%	13.1%	2
26201	Upshur County 88.0% Barbour County 8.3% Lewis County 3.7%	12.0%	3
26203	Webster County 84.9% Nicholas County 7.8% Braxton County 7.3%	15.1%	3
26208	Webster County 65.1% Nicholas County 34.9%	34.9%	2
26224	Randolph County 52.6% Upshur County 47.4%	47.4%	2
26236	Randolph County 94.7% Upshur County 5.3%	5.3%	2
26238	Barbour County 89.3% Upshur County 10.7%	10.7%	2
26250	Barbour County 90.8% Randolph County 9.2%	9.2%	2
26254	Randolph County 87.2% Tucker County 12.8%	12.8%	2
26261	Greenbrier County 67.0% Nicholas County 33.0%	33.0%	2
26263	Randolph County 74.0% Tucker County 26.1%	26.1%	2
26267	Randolph County 62.4% Upshur County 35.5% Barbour County 2.1%	37.6%	3
26276	Randolph County 52.0% Tucker County 48.0%	48.0%	2
26283	Randolph County 63.2% Tucker County 21.7% Barbour County 15.0%	36.8%	3
26287	Tucker County 98.8% Preston County 1.2%	1.2%	2
26294	Randolph County 98.5% Pocahontas County 1.6%	1.6%	2
26320	Tyler County 96.0% Doddridge County 4.0%	4.0%	2
26321	Lewis County 90.0% Doddridge County 10.0%	10.0%	2
26330	Harrison County 71.3% Taylor County 20.2% Barbour County 8.5%	28.7%	3
26335	Braxton County 70.6% Gilmer County 29.4%	29.4%	2
26343	Lewis County 50.0% Upshur County 50.0%	50.0%	2
26346	Ritchie County 88.7% Pleasants County 10.8% Tyler County 0.5%	11.3%	3
26347	Taylor County 73.6% Barbour County 26.4%	26.4%	2
26351	Gilmer County 95.7% Braxton County 4.3%	4.3%	2
26354	Taylor County 98.2% Marion County 1.8%	1.8%	2
26372	Lewis County 97.7% Upshur County 2.3%	2.3%	2
26374	Preston County 71.3% Taylor County 18.2% Monongalia County 10.5%	28.7%	3
26376	Braxton County 54.0% Lewis County 46.0%	46.0%	2
26377	Wetzel County 67.6% Tyler County 32.4%	32.4%	2
26378	Lewis County 66.8% Harrison County 33.3%	33.3%	2
26384	Gilmer County 84.9% Lewis County 15.1%	15.1%	2
26405	Barbour County 75.3% Preston County 24.7%	24.7%	2
26411	Doddridge County 97.9% Gilmer County 2.1%	2.1%	2
26412	Lewis County 41.5% Braxton County 39.1% Gilmer County 19.3%	58.5%	3
26415	Ritchie County 68.8% Tyler County 16.7% Doddridge County 14.5%	31.2%	3
26416	Barbour County 99.0% Taylor County 0.9%	0.9%	2
26425	Preston County 96.8% Tucker County 3.2%	3.2%	2
26426	Doddridge County 54.5% Harrison County 45.5%	45.5%	2
26431	Harrison County 97.7% Taylor County 2.4%	2.4%	2
26437	Wetzel County 96.2% Marion County 3.9%	3.9%	2
26440	Taylor County 51.4% Preston County 31.4% Barbour County 17.1%	48.6%	3
26443	Gilmer County 86.6% Doddridge County 13.4%	13.4%	2
26447	Lewis County 94.0% Braxton County 6.0%	6.0%	2
26448	Harrison County 90.9% Marion County 5.6% Doddridge County 3.5%	9.1%	3
26456	Doddridge County 87.0% Ritchie County 8.8% Tyler County 4.2%	13.0%	3
26542	Preston County 75.4% Monongalia County 24.6%	24.6%	2
26554	Marion County 87.3% Monongalia County 8.0% Taylor County 3.3% Harrison County 1.5%	12.7%	4
26562	Wetzel County 68.4% Monongalia County 31.6%	31.6%	2
26570	Monongalia County 74.2% Marion County 25.8%	25.8%	2
26575	Wetzel County 72.7% Monongalia County 27.3%	27.3%	2
26582	Marion County 97.6% Harrison County 1.7% Monongalia County 0.7%	2.4%	3
26585	Marion County 67.1% Wetzel County 32.9%	32.9%	2
26588	Marion County 78.9% Monongalia County 21.1%	21.1%	2
26591	Marion County 96.2% Harrison County 3.8%	3.8%	2
26610	Nicholas County 80.2% Webster County 19.8%	19.8%	2
26617	Nicholas County 81.6% Clay County 18.4%	18.4%	2
26623	Braxton County 97.8% Gilmer County 2.2%	2.2%	2
26624	Braxton County 94.5% Gilmer County 5.5%	5.5%	2
26636	Braxton County 46.3% Gilmer County 43.5% Calhoun County 10.2%	53.7%	3
26638	Gilmer County 84.9% Calhoun County 15.1%	15.1%	2
26656	Nicholas County 56.3% Fayette County 43.7%	43.7%	2
26680	Fayette County 44.6% Greenbrier County 32.3% Nicholas County 23.1%	55.4%	3
26690	Fayette County 55.9% Nicholas County 44.1%	44.1%	2
26691	Nicholas County 96.0% Webster County 4.0%	4.0%	2
26710	Mineral County 74.4% Grant County 22.5% Hampshire County 3.1%	25.6%	3
26717	Mineral County 82.3% Grant County 17.7%	17.7%	2
26726	Mineral County 85.7% Grant County 14.3%	14.3%	2
26743	Mineral County 50.6% Grant County 49.4%	49.4%	2
26755	Hampshire County 54.0% Hardy County 46.0%	46.0%	2
26763	Hampshire County 65.3% Mineral County 34.7%	34.7%	2
26847	Grant County 96.8% Hardy County 1.6% Pendleton County 1.6%	3.1%	3
26851	Hardy County 93.8% Hampshire County 6.2%	6.2%	2
26852	Hampshire County 74.3% Hardy County 14.2% Mineral County 11.6%	25.7%	3
26855	Grant County 77.5% Pendleton County 22.5%	22.5%	2
26866	Pendleton County 93.6% Grant County 6.4%	6.4%	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.

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