ZIP codes and county lines in Vermont

39 of the 265 ZIP code areas in Vermont, or 14.7%, 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: 265
In more than one county: 39
At least 5% in a second county: 26
Cross a state line: 0

How Vermont compares

Vermont ranks 37 of 52 (the 50 states, DC and Puerto Rico) by the share of its ZIP code areas that overlap more than one county. 13 of its counties have at least one split ZIP code area along an edge.

Counties with the most split ZIP code areas

Orange County: 10 ZIP codes shared with another county
Washington County: 10 ZIP codes shared with another county
Rutland County: 9 ZIP codes shared with another county
Addison County: 8 ZIP codes shared with another county
Caledonia County: 8 ZIP codes shared with another county

Every split ZIP code area in Vermont

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
05060	Orange County 82.1% Windsor County 11.8% Washington County 6.2%	17.9%	3
05065	Windsor County 95.1% Orange County 4.9%	4.9%	2
05068	Windsor County 99.7% Orange County 0.3%	0.3%	2
05069	Orange County 60.7% Caledonia County 39.3%	39.3%	2
05081	Orange County 83.8% Caledonia County 16.3%	16.3%	2
05143	Windsor County 77.2% Windham County 22.8%	22.8%	2
05148	Windham County 63.4% Bennington County 35.2% Windsor County 1.3%	36.6%	3
05155	Windham County 100.0% Bennington County under 0.1%	under 0.1%	2
05253	Bennington County 95.4% Rutland County 4.6%	4.6%	2
05363	Windham County 65.7% Bennington County 34.3%	34.3%	2
05444	Lamoille County 60.3% Franklin County 39.0% Chittenden County 0.7%	39.7%	3
05461	Chittenden County 93.7% Addison County 6.3%	6.3%	2
05462	Chittenden County 99.9% Addison County 0.1%	0.1%	2
05464	Lamoille County 75.6% Franklin County 24.4%	24.4%	2
05468	Chittenden County 82.8% Franklin County 17.2%	17.2%	2
05471	Franklin County 92.7% Orleans County 7.3%	7.3%	2
05487	Addison County 89.3% Chittenden County 10.7%	10.7%	2
05641	Washington County 61.7% Orange County 38.3%	38.3%	2
05649	Orange County 91.3% Washington County 8.7%	8.7%	2
05654	Orange County 51.7% Washington County 48.3%	48.3%	2
05663	Washington County 97.3% Orange County 2.8%	2.8%	2
05669	Washington County 69.7% Addison County 22.9% Orange County 7.4%	30.3%	3
05676	Washington County 79.0% Chittenden County 21.0%	21.0%	2
05680	Lamoille County 97.8% Washington County 2.3%	2.3%	2
05733	Rutland County 60.7% Addison County 39.3%	39.3%	2
05758	Rutland County 100.0% Windsor County under 0.1%	under 0.1%	2
05760	Addison County 99.5% Rutland County 0.5%	0.5%	2
05761	Rutland County 78.9% Bennington County 21.1%	21.1%	2
05762	Rutland County 100.0% Windsor County under 0.1%	under 0.1%	2
05767	Windsor County 99.2% Rutland County 0.7% Addison County under 0.1%	0.8%	3
05775	Rutland County 92.2% Bennington County 7.8%	7.8%	2
05778	Addison County 92.3% Rutland County 7.7%	7.7%	2
05824	Essex County 68.0% Caledonia County 32.0%	32.0%	2
05837	Essex County 75.4% Caledonia County 24.6%	24.6%	2
05839	Orleans County 98.6% Caledonia County 1.4%	1.4%	2
05842	Orleans County 65.0% Caledonia County 35.0%	35.0%	2
05843	Caledonia County 87.7% Washington County 12.3%	12.3%	2
05846	Essex County 93.5% Orleans County 6.5%	6.5%	2
05873	Caledonia County 96.4% Washington County 3.6%	3.6%	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

MapLogics decides who owns an address from a boundary you draw or import, so a ZIP that straddles two counties is answered by where the address actually is. There is a free trial if you want to see it on your own addresses.

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