Millstone is a borough in Somerset County, in the U.S. state of New Jersey. The borough was originally known as Somerset Courthouse and was the county seat. As of the 2020 United States census, the borough's population was 448, an increase of 30 (+7.2%) from the 2010 census count of 418, which in turn reflected an increase of 8 (+2.0%) from the 410 counted in the 2000 census. Millstone was incorporated as a borough by an act of the New Jersey Legislature on May 14, 1894, from portions of Hillsborough Township, based on the results of a referendum held that day. The borough was reincorporated on March 12, 1928. The borough was named for the Millstone River (a major tributary of the Raritan R…

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How Millstone ranks

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#21Highest income in NJ #21Most active in NJ #33Lowest depression in NJ All NJ rankings →

Town numbers

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Living in Millstone

Housing in Millstone

$681K Median sale price · Redfin, April 2026

The median sale price was $681,000 in April 2026.

Zillow Home Value Index · Redfin Data CenterHousing market →

Work & commute in Millstone

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Most working residents leave Millstone for work: only 0% work in town. The top destinations are Hillsborough (10%), Bridgewater (6%) and Edison (6%). Half commute less than 12 miles.

Hillsborough

10%

Bridgewater

Edison

New Brunswick

0%Work in townlive and work in Millstone 12 miWhere do people commute?the commute map 16Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Millstone →

Health in Millstone

A⁺

Health Grade A+

Healthier than 96% of U.S. towns on seven CDC estimates.

Compared with New Jersey

10better than NJ·1worse

of 32 measures CDC estimates. The other 21 are too close to call.

Conditions 2▲ 1▼ 9 close Habits 1▲ 3 close Care 2▲ 5 close Mind 1▲ 4 close Everyday needs 4▲ 0 close

BetterToo close to callWorse

What stands out

8.6%Fewer adults facing food insecurityNJ 14.3% · better 5.9%Fewer older adults who have lost all their teethNJ 9.6% · better 9.4%More adults who have had cancerNJ 7.5% · worse

Care nearby

Robert Wood Johnson University Hospital - SomersetSomerville · 4.7 mi · ER

Zufall Health Center SomervilleSomerville · 4.3 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthNo shortage

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Millstone · CMS · HRSAHealth in Millstone →

Natural hazards in Millstone

Moderate

Expected storm and flood damage is higher than in 58% of U.S. communities.

🌊 Inland flooding

88Does Millstone flood?paid flood claims since 1978 3Disasters that paid out herefederal disasters sent FEMA money to Millstone MapMillstone vs. its neighborsnearby towns shaded by rating

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Millstone →

Climate in Millstone

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Millstone has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 23°, and about 21 inches of snow falls in a normal winter.

43° / 25°Winter

63° / 40°Spring

85° / 62°Summer

66° / 45°Fall