Rockingham County is a district of New Hampshire.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
| City of Portsmouth | no seat recorded | 21 k |
| Town of Atkinson | no seat recorded | 7 k |
| Town of Auburn | no seat recorded | 5 k |
| Town of Brentwood | Brentwood | 5 k |
| Town of Candia | no seat recorded | 4 k |
| Town of Chester | no seat recorded | 5 k |
| Town of Danville | no seat recorded | 4 k |
| Town of Deerfield | no seat recorded | 4 k |
| Town of Derry | no seat recorded | 33 k |
| Town of East Kingston | no seat recorded | 2 k |
| Town of Epping | no seat recorded | 7 k |
| Town of Exeter | no seat recorded | 15 k |
| Town of Fremont | no seat recorded | 5 k |
| Town of Greenland | no seat recorded | 4 k |
| Town of Hampstead | no seat recorded | 9 k |
| Town of Hampton | no seat recorded | 15 k |
| Town of Hampton Falls | no seat recorded | 2 k |
| Town of Kensington | no seat recorded | 2 k |
| Town of Kingston | no seat recorded | 6 k |
| Town of Londonderry | no seat recorded | 25 k |
| Town of New Castle | no seat recorded | 975 |
| Town of Newfields | no seat recorded | 2 k |
| Town of Newington | no seat recorded | 772 |
| Town of Newmarket | no seat recorded | 9 k |
| Town of Newton | no seat recorded | 5 k |
| Town of North Hampton | no seat recorded | 4 k |
| Town of Northwood | no seat recorded | 4 k |
| Town of Nottingham | no seat recorded | 5 k |
| Town of Plaistow | no seat recorded | 8 k |
| Town of Raymond | no seat recorded | 10 k |
| Town of Rye | no seat recorded | 5 k |
| Town of Salem | no seat recorded | 29 k |
| Town of Sandown | no seat recorded | 6 k |
| Town of Seabrook | no seat recorded | 9 k |
| Town of South Hampton | no seat recorded | 809 |
| Town of Stratham | no seat recorded | 7 k |
| Town of Windham | no seat recorded | 14 k |
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We show Brentwood as the capital of Rockingham County. If that is wrong, tell us what it should be and where you read it.
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