#1Epping
Rockingham County7,132 in 2020·7,973 in 2025·+841 people
Epping, #1 on this list · Photo: Ken Gallager · CC BY-SA 4.0New Hampshire rankings · Growth
Fastest-growing towns in New Hampshire
Epping has grown fastest of New Hampshire’s 121 towns of 2,500+: up 11.8% from 7,132 residents in April 2020 to an estimated 7,973 in July 2025 (Census Bureau estimates). The typical town here changed +2.6%; 6 of the 121 lost residents.
Census Bureau population estimates, Vintage 2025: July 1, 2025 against the April 2020 base, both on January 2025 town lines (people a town annexed are in its base, not its growth). Estimates, not counts. Unincorporated communities (census-designated places) get no estimate, so they aren’t listed. A described list: no letters. How grades work
#1+11.8%
#2Merrimack
Hillsborough County26,635 in 2020·29,699 in 2025·+3,064 people
#3Brentwood
Rockingham County4,484 in 2020·4,923 in 2025·+439 people
All 121 towns
Growth since 2020, highest first.
121 towns ranked. Not here? See why a town may be missing.
#TownGrowth since 2020People addedResidents
Quick answers
Questions people ask
What is the fastest-growing town in New Hampshire?
Epping (Rockingham County): it grew 11.8%, from 7,132 residents in April 2020 to an estimated 7,973 in July 2025. Merrimack (+11.5%) and Brentwood (+9.8%) follow.
How are these towns ranked?
By the percent change in residents from the Census Bureau’s April 2020 estimates base to its latest July 1 estimate, highest first, on the exact change: two towns shown with the same tenth of a percent keep the order of their unrounded figures, and only an identical change shares a rank (T). The base is the 2020 Census count redrawn on today’s town lines, so a town that annexed land since 2020 changes only by births, deaths and moves, not by the people it took in. How grades work.
Why isn’t my town on this list?
The list covers the towns TownRatings grades that had 2,500+ residents in the 2020 estimates base (121 in New Hampshire). Census-designated places (unincorporated communities) have no Census Bureau estimates, so they never appear; a town incorporated since 2020, or one TownRatings merges with its twin township, isn’t listed either. Every town is on the New Hampshire page.
Go deeper
All New Hampshire rankings →More New Hampshire lists
Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.
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