New Hampshire Rockingham County
New Castle
A town in Rockingham County, New Hampshire — population 1,001 as of 2022.
stops being your city.
New Castle takes over news, events and the map.
News around Rockingham County
There is a flood alert for Thursday, October 1st in Hampton for a 10.4 ft high tide, which is expected to peak around 3:00 PM.
Public Safety
Sample Ballots and Absentee Ballots Available
Sample Ballots and Absentee Ballots are now available for the November 3, 2026 election.
Government & Civic
5th Annual Londonderry Seniors Informational Expo – October 3
Join the Londonderry Senior Resource Committee for the 5th Annual Londonderry Seniors Informational Expo on Saturday, October 3, 2026, from 10:00 a.m. to 1:00 p.m. at Londonderry High School.
Events
Fire Prevention Permits
For Special Use Permits or Oil Burner Permits, please click on the link below
Government & Civic
Last Chance to Register Your Dog!
Fines will be applied October 6, 2026
Government & CivicIn and around New Castle
Musicians & bands near New Castle →
Explore the Greater Boston metro →
New Castle changes faster than we can keep up.
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New Castle by the numbers
- Median age
- 62.8
- Households
- 401
- Persons per household
- 2.1
- Median household income
- $176,953
- Median house value
- $1,701,300