Data / Rankings / Housing units authorized by building permits / Counties in New Hampshire

Counties in New Hampshire by housing units authorized by building permits

Rockingham County had the highest housing units authorized by building permits of 10 counties in 2024, at 1,300. Sullivan County had the lowest, at 100. The median was 355. Source: the U.S. Census Bureau.

Highest1,300Rockingham County
Lowest100Sullivan County
Median35510 counties

All counties, 2024

CSVChart (SVG)

Rockingham CountyRockingham County: 1,300 count1,300Strafford CountyStrafford County: 942 count942Hillsborough CountyHillsborough County: 872 count872Grafton CountyGrafton County: 472 count472Carroll CountyCarroll County: 355 count355Merrimack CountyMerrimack County: 355 count355Belknap CountyBelknap County: 282 count282Cheshire CountyCheshire County: 172 count172Coos CountyCoos County: 115 count115Sullivan CountySullivan County: 100 count100
count. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2024
count		Change on 2023
1Rockingham County Estimated1,300+62.7%
2Strafford County Estimated942+89.2%
3Hillsborough County Estimated872-36.9%
4Grafton County Estimated472+15.1%
5Carroll County Estimated355-11%
5Merrimack County Estimated355-7.3%
7Belknap County Estimated282-20.3%
8Cheshire County Estimated172+22.9%
9Coos County Estimated115+23.7%
10Sullivan County Estimated100+3.1%

Other periods

About this ranking

Annual number of new privately owned housing units authorized by building permits, from the US Census Bureau Building Permits Survey.

Final annual county estimates include imputation for missing reports. Counts housing units, not buildings, starts, completions or sales. Covers permit-issuing areas; areas where permits are not required are outside the survey. Not seasonally adjusted or expressed as an annualized monthly rate. The total is the sum of units in the four published structure categories; inputs are retained.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. https://www2.census.gov/econ/bps/County/co2024a.txt. Retrieved 2026-10-10.

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Rank Counties in New Hampshire by housing units authorized by building permits using official data, and cite the source.
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Questions

Which county has the highest housing units authorized by building permits?

Rockingham County, with 1,300 in 2024, according to the U.S. Census Bureau.

Which county has the lowest housing units authorized by building permits?

Sullivan County, with 100 in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. Retrieved 2026-10-10.

Housing units authorized by building permits: other rankings

Counties in New Hampshire: more rankings