County or equivalent · 33013
Merrimack County, New Hampshire
Annual housing permits and reporting coverage
- Published estimate · 2025
- 286
- Reported only · 2025
- 210
- Added by estimation · 2025
- 76
Reported and estimated units by year
| Year and source | Published estimate | Reported only | Added by estimation |
|---|---|---|---|
| 2023 Census file | 383 | 280 | 103 |
| 2024 Census file | 355 | 274 | 81 |
| 2025 Census file | 286 | 210 | 76 |
2024 to 2025 · published estimate -69 units · reported only -64 · added by estimation -5. This split describes the difference between the published columns.
What types of housing were authorized?
| Units in building | Published estimate | Reported only | Added by estimation |
|---|---|---|---|
| One unit | 248 | 191 | 57 |
| Two units | 16 | 12 | 4 |
| Three or four units | 22 | 7 | 15 |
| Five or more units | 0 | 0 | 0 |
Local housing and rent context
| Measure | Estimate and margin |
|---|---|
| Housing units · Census table B25001 | 66,497 ± 92 |
| Median gross monthly rent · Census table B25064 | $1,360 ± $37 |
| Gross rent at least 30% of income · Census table B25070 | 44.8% ± 3.4 percentage points |
| Gross rent at least 50% of income | 19.6% ± 2.7 percentage points |
| Estimated households with a computed rent-to-income ratio | 15,440 |
The 2025 permit estimate amounts to 4.3 authorized units per 1,000 housing units in the ACS estimate. The numerator and denominator cover different periods.
The Vintage 2025 Census housing stock estimate changed from 67,321 in 2024 to 67,654 in 2025 (+333 units). This is a separate model-based inventory estimate.
Permit offices listed under this county code
Use the office pages for their own histories and source coverage notes.
- Allenstown townPermit office 33013000 · Merrimack County · 6 authorized units
- Andover townPermit office 33029000 · Merrimack County · 5 authorized units
- Boscawen townPermit office 33093000 · Merrimack County · 14 authorized units
- Bow townPermit office 33097000 · Merrimack County · 19 authorized units
- Bradford townPermit office 33101000 · Merrimack County · 5 authorized units
- Canterbury townPermit office 33137000 · Merrimack County · 8 authorized units
- Chichester townPermit office 33173000 · Merrimack County · 3 authorized units
- ConcordPermit office 33193000 · Merrimack County · 20 authorized units
- Danbury townPermit office 33217000 · Merrimack County · 13 authorized units
- Dunbarton townPermit office 33253000 · Merrimack County · 4 authorized units
- Epsom townPermit office 33289000 · Merrimack County · 14 authorized units
- FranklinPermit office 33317000 · Merrimack County · 16 authorized units
- Henniker townPermit office 33417000 · Merrimack County · 16 authorized units
- Hill townPermit office 33421000 · Merrimack County · 3 authorized units
- Hooksett townPermit office 33445000 · Merrimack County · 11 authorized units
- Hopkinton townPermit office 33449000 · Merrimack County · 1 authorized units
- Loudon townPermit office 33529000 · Merrimack County · 11 authorized units
- New London townPermit office 33637000 · Merrimack County · 14 authorized units
- Newbury townPermit office 33641000 · Merrimack County · 23 authorized units
- Northfield townPermit office 33669000 · Merrimack County · 13 authorized units
- Pembroke townPermit office 33701000 · Merrimack County · 24 authorized units
- Pittsfield townPermit office 33717000 · Merrimack County · 12 authorized units
- Salisbury townPermit office 33781000 · Merrimack County · 8 authorized units
- Sutton townPermit office 33869000 · Merrimack County · 7 authorized units
- Warner townPermit office 33913000 · Merrimack County · 8 authorized units
- Webster townPermit office 33933000 · Merrimack County · 3 authorized units
- Wilmot townPermit office 33949000 · Merrimack County · 5 authorized units
Sources and definitions
How to read these figures
- The Census Building Permits Survey counts new privately owned housing units authorized by permits. One permit can cover multiple units. The counts describe authorizations, a stage before starts and completions.
- The published estimate includes reported units and Census estimates that fill gaps. The difference is calculated from those two columns. Reported-only units can include records from approved alternative sources. A missing report can leave an office without a usable count.
- County and state totals come from their own Census files. Permit offices can cover places across county lines or areas served by another jurisdiction. The office’s county field is used for navigation.
- ACS housing inventory and rents are survey estimates for 2020–2024. Gross rent includes rent and separately paid utilities or fuels. Rent burden is the share paying at least 30% of income among cash-rent households with a computed ratio. Margins are at 90% confidence. The margin for rent burden is approximate.
- Vintage 2025 county housing stock is a separate Census series. Its model uses building-permit data alongside other inputs. Read stock change and permits as separate measures.
Public sources retrieved November 10, 2026. Building Permits Survey annual data · Survey methodology · American Community Survey data · Download the comparison