Data / Rankings / Housing units authorized by building permits / Counties in Maryland

Counties in Maryland by housing units authorized by building permits, 2025

Prince George's County had the highest housing units authorized by building permits of 24 counties in 2025, at 2,090. Somerset County had the lowest, at 35. The median was 262. Source: the U.S. Census Bureau.

Highest2,090Prince George's County
Lowest35Somerset County
Median26224 counties

All counties, 2025

CSVChart (SVG)

Prince George's CountyPrince George's County: 2,090 count2,090Anne Arundel CountyAnne Arundel County: 1,844 count1,844Baltimore CountyBaltimore County: 1,531 count1,531Montgomery CountyMontgomery County: 1,411 count1,411Frederick CountyFrederick County: 1,168 count1,168Charles CountyCharles County: 935 count935Howard CountyHoward County: 728 count728Harford CountyHarford County: 715 count715Baltimore cityBaltimore city: 543 count543Washington CountyWashington County: 354 count354Queen Anne's CountyQueen Anne's County: 285 count285St. Mary's CountySt. Mary's County: 282 count282Worcester CountyWorcester County: 242 count242Talbot CountyTalbot County: 198 count198Wicomico CountyWicomico County: 170 count170Calvert CountyCalvert County: 157 count157Carroll CountyCarroll County: 153 count153Garrett CountyGarrett County: 148 count148Cecil CountyCecil County: 142 count142Caroline CountyCaroline County: 75 count75Dorchester CountyDorchester County: 64 count64Kent CountyKent County: 53 count53Allegany CountyAllegany County: 35 count35Somerset CountySomerset County: 35 count35
count. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2025
count		Change on 2024
1Prince George's County Estimated2,090+41.9%
2Anne Arundel County Estimated1,844+41.4%
3Baltimore County Estimated1,531+1.3%
4Montgomery County Estimated1,411-61.4%
5Frederick County Estimated1,168-25.2%
6Charles County Estimated935-39.4%
7Howard County Estimated728-17.4%
8Harford County Estimated715-11%
9Baltimore city Estimated543-57.3%
10Washington County Estimated354+52.6%
11Queen Anne's County Estimated285-19.9%
12St. Mary's County Estimated282+6.4%
13Worcester County Estimated242-31.6%
14Talbot County Estimated198+90.4%
15Wicomico County Estimated170-39.1%
16Calvert County Estimated157+55.4%
17Carroll County Estimated153-1.9%
18Garrett County Estimated148+21.3%
19Cecil County Estimated142-74.7%
20Caroline County Estimated75+36.4%
21Dorchester County Estimated64-19%
22Kent County Estimated53+10.4%
23Allegany County Estimated35-40.7%
23Somerset County Estimated35-25.5%

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/co2025a.txt. Retrieved 2026-10-10.

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Rank Counties in Maryland 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?

Prince George's County, with 2,090 in 2025, according to the U.S. Census Bureau.

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

Somerset County, with 35 in 2025.

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 Maryland: more rankings