Free. Every answer comes with its margin of error.
Type a ZIP and see how many mobile homes the Census counted there. At ZIP level most of those counts are estimates with a wide margin, so this shows the range and says how far to trust it.
Type any US ZIP code to see how many mobile homes the Census counted there, what share of all housing that is, which counties it covers, and its wind zone.
Most ZIP-level numbers are estimates with a wide margin. This shows the range and tells you plainly how much to trust it.
Of the 41,017 ZIP codes with Census housing figures, here is how the mobile home counts hold up.
1,701
4% of ZIPs. The margin of error is small next to the count. Most are areas with more than a thousand mobile homes.
17,230
42% of ZIPs. Good enough to spot a mobile home area. Too loose to quote as a count.
14,763
36% of ZIPs. The margin of error is about as big as the count itself, so the figure shows mobile homes exist there and little more.
7,323
18% of ZIPs. The Census found no mobile homes, though a zero still carries a margin of its own.
The American Community Survey does not count every home. The Census Bureau selects about 3.5 million addresses a year, out of roughly 144 million homes, and pools five years of answers to reach down to ZIP level. A small ZIP can have only a handful of sampled mobile homes behind its figure, and the published margin of error says so.
To turn that margin into a label, the tool uses the reliability thresholds Esri applies to Census survey data. The margin becomes a coefficient of variation: 12% or less is reliable, up to 40% calls for caution, and anything above 40% is low reliability. Esri describes these as general thresholds, and so do we.
A ZIP code and a Census area are also different things. The Census reports on ZIP Code Tabulation Areas, which follow ZIP boundaries closely but not exactly. 9,190 ZIP codes are PO box or single-business ZIPs with no area of their own, and for those the tool uses the area the ZIP sits inside.
The count is table B25024 of the ACS 2020-2024 5-year estimates, which records how many housing units of each type exist in an area. Mobile homes are their own line in that table, with a published margin of error. ZIP codes are matched to Census areas with HRSA's ZIP Code to ZCTA crosswalk, and to counties with the Census 2020 ZCTA to County Relationship File.
Because for most ZIPs one number would be a guess dressed up as a fact. ZIP 85365 in Yuma, Arizona shows 9,975 mobile homes, give or take 680, and you can plan around that. ZIP 42223 at Fort Campbell shows 46, give or take 46, which could mean none at all. Showing the range costs one line and keeps you from planning a deal around noise.
ZIP codes are drawn for mail delivery and ignore county lines. Counties are listed largest first, by how much of the ZIP's land falls in each. It matters because county decides your property tax, your dealer licensing office and your wind zone.
125 Census areas straddle a wind zone boundary, mostly in coastal North Carolina, Texas and South Carolina. For those, the tool will not name a single zone, because the right answer depends on the exact county the home sits in. Find the county from the address, then check it in the wind zone lookup.
No. This is the total stock: every mobile home standing in the ZIP, lived in or not. It tells you how deep a market is. It says nothing about how many are listed right now.
These are the ACS 2020-2024 5-year estimates, the newest release that reaches ZIP level. Five-year releases are normally scheduled for December. This one was due December 11, 2025 and came out on January 29, 2026.
Data built September 12, 2026 from 41,061 ZIP codes and 33,772 Census areas. This product uses Census Bureau data but is not endorsed or certified by the Census Bureau.
The toolkit walks you from a promising area to a closed deal: what to inspect, what to pay, how to write the note and how to get paid twice on the same home.
