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County · New Hampshire
Merrimack County
157,869Population
2.6 %Change since 2020
1,134Net migration
2.8 %Unemployment rate
Facts
- Population
- 157,869 (2024)
- Change since 2020
- 2.6 %
- Net migration
- 1,134 (2023)
- Unemployment rate
- 2.8 % (2025)
- State
- New Hampshire
- Population base, April 2020
- 153,805 (2020)
- Births
- 1,334 (2023)
- Births per 1,000 residents, 2023
- 8.5
- Deaths
- 1,639 (2023)
- Deaths per 1,000 residents, 2023
- 10.4
- Natural change, 2023
- -305
- International migration
- 252 (2023)
- Domestic migration
- 882 (2023)
- Net migration per 1,000, 2023
- 7.2
- Postal code
- NH
- FIPS code
- 33013
Sources: US Census Bureau — Population Estimates, Bureau of Labor Statistics — LAUS
Unemployment rate, annual average
| Period | Value |
|---|---|
| 2025 | 2.8 % |
| 2024 | 2.3 % |
| 2023 | 2.0 % |
| 2022 | 2.2 % |
| 2021 | 3.2 % |
| 2020 | 5.9 % |
| 2019 | 2.3 % |
| 2018 | 2.3 % |
| 2017 | 2.5 % |
| 2016 | 2.6 % |
| 2015 | 3.1 % |
| 2014 | 3.8 % |
Population estimates, 2020–2024
| Period | Value |
|---|---|
| 2024 | 157,869 |
| 2023 | 157,059 |
| 2022 | 156,241 |
| 2021 | 154,627 |
| 2020 | 154,039 |