Sign contractors default to a simple mental model: incorporated city, check the city code; unincorporated land, check the county code. That model breaks down in a specific, identifiable set of places, and it breaks down for a structural reason — not a data gap, but state law itself stripping counties of sign-code authority. Get this wrong and you cite a document that legally does not govern the sign you’re about to install.
72 counties, 7 states, 40.4 million residents
Across the 33,535 governments we track, 72 carry a verdict in our jurisdiction-authority resolution that specifically means the state denies counties sign-code authority — and every single one of those 72 is a county-level government, not a city or town. It is the smallest of the six verdicts by government count (0.2%) and one of the largest by population reach (7.1%), a gap we unpack in who holds sign authority in America. They are not scattered randomly across the map. They cluster in seven states:
| State | Counties with this verdict |
|---|---|
| Texas | 36 |
| New Jersey | 12 |
| New York | 8 |
| Massachusetts | 8 |
| Connecticut | 5 |
| New Hampshire | 2 |
| Maine | 1 |
Texas alone accounts for exactly half of the 72 — a reflection of how Texas county government is structured statewide, with counties generally lacking general zoning and sign-code authority over unincorporated land except in narrowly defined circumstances. The combined population living in these 72 counties is 40.4 millionresidents — a population large enough that “this only affects a handful of rural counties” is the wrong read. Some of the largest county governments in the country are on this list.
What this looks like in practice
Tarrant County, TX (population 2,135,743) and Dallas County, TX (population 2,603,816) are both on this list, as is Kings County, NY (population 2,646,306, better known as Brooklyn) and Middlesex County, NJ (population 861,535). These are not obscure edge cases — they are among the largest county-level governments we track anywhere in the country, and in every one of them, the county’s own code is not the governing sign authority for the county-level jurisdiction. These four appear here purely as scale examples of the pattern; the practical rule applies the same way whether the county has two million residents or twenty thousand.
The practical consequence for a sign contractor: if your project sits in unincorporated land inside one of these counties, do not default to pulling the county sign code and treating it as authoritative. In most of these states, sign regulation inside incorporated cities and towns still runs through the city or town’s own code as normal — this verdict is specifically about the county-level government’s authority over unincorporated area, not a statement that the whole state has no sign codes. What actually governs unincorporated land varies: sometimes it’s a state-level provision, sometimes it’s effectively unregulated at the local level for sign purposes, and sometimes authority sits with a different body entirely (a regional planning commission, in a few cases). The one thing you can rule out is treating the county’s general code as the controlling sign ordinance.
Why this happens
County government powers are creatures of state law, and states differ sharply in how much home-rule or general zoning authority they hand down to counties versus reserving it for incorporated municipalities. New England’s pattern (Massachusetts, Connecticut, New Hampshire, Maine all appearing here) reflects a regional tradition where county government is historically weak or purely administrative, with towns holding the real land-use authority. New Jersey’s pattern reflects a similar strong-municipality, weak-county structure. Texas is the outlier in scale — its counties simply were never granted general zoning power over unincorporated land under state law, which is why 36 of the 72 counties on this list are Texas counties.
What to do with this if you work in one of these states
If you take on projects in Texas, New Jersey, New York, Massachusetts, Connecticut, New Hampshire, or Maine, build a habit of checking jurisdiction type before you check the ordinance itself. A project address that geocodes to unincorporated county land in one of these seven states needs a different lookup path than a project address inside an incorporated city or town in the same state. Pulling the wrong document doesn’t just waste research time — it can mean citing setback, height, or permit requirements to a client or inspector that carry no legal weight for that parcel.
This is also a trap that is easy to fall into precisely because it is invisible from the outside. A county government page, a county GIS parcel viewer, and a county-branded “municipal code” document all look exactly as authoritative whether or not the county actually has sign-code jurisdiction over the parcel in question. Nothing on a typical county website flags “this office does not regulate signs here” — that is a fact about state enabling law, not something the county’s own published code is going to volunteer. The only way to catch it is to check jurisdiction authority as a separate step from reading the ordinance text, before you start citing sections to a client.
What this is not saying
To be precise about what this verdict does and doesn’t mean: it is not a claim that these 72 counties, or the seven states they sit in, have no sign regulation anywhere within their borders. Incorporated cities and towns inside these counties generally retain their own sign-code authority exactly as they would in any other state — a sign project inside the city limits of a Texas city, for instance, is governed by that city’s own code, not by this county-level finding at all. The verdict is narrowly about the county government itself and its authority over unincorporated land within the county. Confusing county-level authority with municipal-level authority is exactly the kind of jurisdiction-identity mistake that produces a wrong-code citation, which is why the two need to be checked as separate questions rather than assumed to track together.
Two neighbouring verdicts are worth keeping distinct from this one. A county that never adopted a sign code could have and didn’t; a township that cascades to its county never took the power in the first place, a pattern concentrated in two states and covered in when county code governs, not city code. Only the verdict in this article means the county was never allowed to regulate at all. Texas is the state where all three of these show up at scale, which is why its authority picture is the messiest in our Texas sign code guide.
How to check jurisdiction authority for your project
A report identifies which government actually holds sign authority for an address, including the specific case where a county lacks authority over unincorporated land — before you spend time reading the wrong code. Creating an account is free.