Each edition grades its towns against each other only.
Home to 3 places on the National Register of Historic Places.
69% of adults 25 and older hold a bachelor’s degree or more in New Castle, above both New Hampshire’s towns (39%) and U.S. towns (29%). Of the 127 New Hampshire towns we compare, none has a higher median age than New Castle. Its National Register listings include Fort Constitution and Portsmouth Harbor Light. New Castle has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where New Castle beats most towns.
Census counts: 534 in 1790, a low of 378 in 1930, 1,000 in 2020. The archive holds 23 old photos and papers going back to 1771 and 7 maps from 1893 on.
3 places on the National Register of Historic Places.
Museums, parks, gardens and other places to visit around New Castle. Close and well known come first.
29 mi Ancient siteAmerica's Stonehenge
2 mi MuseumStrawbery Banke
in town LandmarkFort William and Mary
10 mi LighthouseCape Neddick Light
33 mi Theme parkCanobie Lake Park
38 mi MuseumPeabody Essex MuseumAmerica's Stonehenge: User:Stan Shebs, CC BY-SA 3.0 · Strawbery Banke: Ken Gallager (Ken Gallager from en.wikipedia), Public domain · Fort William and Mary: AlexiusHoratius, CC BY-SA 3.0 · Cape Neddick Light: Stefan Hillebrand, CC BY-SA 3.0 · Canobie Lake Park: Alex1961, CC BY-SA 2.0 · Peabody Essex Museum: Fletcher6, CC BY-SA 3.0
Who provides power, water and the rest in New Castle, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 19, 2024.
Ordered by what stands out in New Castle.
New Castle’s median rent is $3,501 a month, above both the New Hampshire town median ($1,388 a month) and the median of U.S. towns ($1,185 a month). 93% of households own their home in New Castle. The typical New Castle home is worth about $2,508,000, up 4.2% in a year, 5 times the New Hampshire typical home.
| New Castle | New Hampshire towns | U.S. towns | |
|---|---|---|---|
| Median rent | $3,501 a month | $1,388 a month | $1,185 a month |
| Households that own their home | 93% | 82% | 73% |
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Its public schools are run by the New Castle School District. Its one school is below.
| School | Level | Students | Letter |
|---|---|---|---|
| Maude H. Trefethen SchoolLargest public elementary schoolGrades K–6 | Grades K–6 | 33 | A+ |
NCES · EDFacts
Expected storm and flood damage is lower than in 81% of U.S. communities. Since 1978, 12 flood insurance claims have been paid out in New Castle.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
New Castle has chilly, snowy winters and pleasant summers, with plenty of rain. New Castle’s July high is 80°F.
NOAA U.S. Climate Normals, 1991–2020
The median household income in New Castle is $177,000. Jobs based in New Castle grew to 385 in 2023, 69 more than in 2013. 4.6% of New Castle residents live below the poverty line.
| New Castle | New Hampshire towns | U.S. towns | |
|---|---|---|---|
| Median household income | $177,000 | $103,000 | $80,000 |
| Average trip to work | 33 minutes | 28 minutes | 25 minutes |
| Working residents who work in town | 0.3% | 10% | 8% |
| Below the poverty line | 4.6% | 6.8% | 9.6% |
Census LEHD 2023 · ACS
New Castle's reported crime rate is well below New Hampshire's. Only 4 of the 126 New Hampshire towns we compare have a lower property crime rate than New Castle. Violent crime is rare: 1 reported in 2025.
| New Castle | New Hampshire towns | U.S. towns | |
|---|---|---|---|
| Property crimes per 1,000 (2025) | 1 per 1,000 residents | 4.4 | 9.9 |
| Violent crimes per 1,000 (2025) | 1 per 1,000 residents | 0.7 | 1.6 |
FBI crime data, 2025 · crimes reported to police
New Castle beats the New Hampshire average on 18 of 32 CDC measures and trails it on 5. No town among the 127 in New Hampshire we compare has a lower share of adults who report frequent mental distress than New Castle.
| New Castle | New Hampshire towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 11% | 16% | 17% |
| Feel lonely (CDC PLACES) | 25% | 30% | 33% |
| Binge drink (CDC PLACES) | 12% | 16% | 16% |
| Sleep under 7 hours (CDC PLACES) | 28% | 33% | 36% |
| What stands out | New Castle | NH |
|---|---|---|
| Fewer adults facing housing insecurity | 4.4% | 8.1% |
| Fewer older adults who have lost all their teeth | 5% | 8.9% |
| More adults who have had cancer | 14.5% | 9.8% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
0.9 miles of trail in 1 park or preserve. Only 3 of the 127 New Hampshire towns we compare have a lower trail density than New Castle. The biggest park or preserve is Wentworth-Coolidge Historic Site, at 37 acres.
| New Castle | New Hampshire towns | U.S. towns | |
|---|---|---|---|
| Conserved land | 7.6% | 18% | 4.3% |
| Miles of trail per square mile | 0.4 miles per square mile | 1.2 | 0.4 |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Wentworth-Coolidge Historic Site | — | 37 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
2 within 15 miles of the center of New Castle
About 1 of every 100 New Castle residents are enrolled in college, against 6 across New Hampshire.
Coastal flooding makes up 21% of the storm damage FEMA expects here.
FEMA National Risk Index · OpenFEMA · OpenStreetMap
3 places in New Castle on the National Register of Historic Places.
Place in New Hampshire, United States
New Castle is a town in Rockingham County, New Hampshire, United States. The population was 1,000 at the 2020 census. It is the easternmost town in New Hampshire and the smallest by area, and it is the only town in the state located entirely on islands. It is home to Fort Constitution Historic Site, Fort Stark Historic Site, and the New Castle Common, a 31-acre (13 ha) recreation area on the Atlantic Ocean. New Castle is also home to a United States Coast Guard station, as well as the historic Wentworth by the Sea hotel.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
New Castle has fewer than 1,000 residents, too few for fair grades; the figures below are still real. Home to 3 places on the National Register of Historic Places.
2 notable people were born here, including Benjamin Randall and Shadrach Walton.
