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Towns / New Jersey

Greenwich, New Jersey

Greenwich is an unincorporated community of about 2,700 people in Warren County, New Jersey, in the Allentown area. It has no city government of its own: local services come from the county, or in some states from the town or township. A typical home costs about 2.9 years of the typical household's income, compared with 4.1 across the U.S. The nearest metro area of about a million people or more, Philadelphia, is about 47 miles away as the crow flies.

Suburb of Allentown

Population
2,679
Census survey, 2020-24
Typical home, 2020-24
$468,400
Warren County prices up 29% since 2022
Household income
$164,167
U.S.: $80,734
Prices, Allentown area
100
U.S. average = 100
Emergency room
3 miles
Phillipsburg, NJ
To Philadelphia
47 mi
straight line

The book's checklist

  • Lower cost of livingEveryday prices match the U.S. average in the Allentown-Bethlehem-Easton metro area.
  • More house for the moneyA typical home costs 2.9 years of the typical household's income here. Across the U.S. it's 4.1.
  • A safer neighborhoodThe FBI doesn't publish crime figures for unincorporated communities. Call the county sheriff's office (or the town or township police, where there is one) and ask what calls they get most.
  • Schools in town2 public schools: 1 elementary and 1 middle. No public high school in town: the nearest is Phillipsburg High School, about 3 miles away.
  • A hospital close bySt. Luke's Warren Hospital in Phillipsburg, about 3 miles away, has the nearest emergency room.
  • Within reach of a big cityPhiladelphia is about 47 miles away as the crow flies. The book suggests staying within about 60 miles if you'll miss big-city sports, concerts and theater.

A check means Greenwich meets the rule of thumb from Frank and Dave's book. An empty box isn't a deal breaker: it's something to weigh for your family. A question mark means there isn't enough data.

What kind of town

A suburb, not a stand-alone small town

Greenwich runs into the built-up area around Allentown (Census Bureau, 2020 urban areas). We include suburbs under 20,000 people because some still feel like small towns, but daily life here is closer to the suburbs than to the towns Frank and Dave's book describes. Weigh it against towns farther out.

The book sorts small towns into six types. These labels come only from the numbers; take the quiz to see which type fits your family.

For a lifetime

Homes and money

Typical home value, as owners valued them in 2020-2024
$468,400U.S.: $332,700
Home prices since then
Up 29%Warren County, 2022 to 2025
Typical household income
$164,167U.S.: $80,734
Homes owned by the people living in them
99%U.S.: 65%
Typical property tax bill
$10,000 or more a yearNew Jersey: $9,590
Homes built before 1940
2%U.S.: 12%
Homes built since 2010
0%U.S.: 11%
Vacation and seasonal homes
0%U.S.: 3%
Everyday prices
100U.S. average = 100 (the Allentown-Bethlehem-Easton metro area)

Home values and rents are what households told the Census Bureau across 2020 to 2024, so they trail today's market: county prices have moved up 29% since 2022. Everyday prices are the government's average for the Allentown-Bethlehem-Easton metro area, not Greenwich alone. Check current listings before you budget.

Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates; Federal Housing Finance Agency, House Price Index for counties (all transactions); U.S. Bureau of Economic Analysis, Regional Price Parities, 2024.

The people

Population, 2020-2024 Census survey
2,679The Census Bureau makes yearly estimates only for incorporated towns
Median age
38.8 yearsU.S.: 38.9
Age 65 and older
6%U.S.: 17%
Under 18
31%U.S.: 22%
Adults with a bachelor's degree or more
52%U.S.: 36%
Moved here from another county or state in the past year
2%U.S.: 6%
College students
9%share of all residents

Sources: U.S. Census Bureau, Population Estimates (Vintage 2025); U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Work

Biggest lines of work
Schools, health care and social services (22%); finance, insurance and real estate (14%); manufacturing (12%)
Unemployment rate
7%U.S.: 5%
Average commute
40 minutesU.S.: 26 minutes
Work from home
17%U.S.: 15%
Below the poverty line
2%U.S.: 12%

Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Health care

Nearest emergency room: St. Luke's Warren Hospital, Phillipsburg, NJ, about 3 miles away. It's a general hospital. Medicare gives it 5 of 5 stars.

Look up doctors, clinics and the hospitals themselves on Medicare's Care Compare. Ask where the most serious cases are sent.

Sources: Centers for Medicare & Medicaid Services, Hospital General Information.

Schools

2 public schools in Greenwich, run by Greenwich Township School District. The nearest public high school is Phillipsburg High School, about 3 miles away.

See each school on the federal school search, then check test scores and graduation rates on New Jersey's school report card.

Sources: National Center for Education Statistics, Common Core of Data, 2023-24 (via the Urban Institute Education Data Portal); National Center for Education Statistics, IPEDS institution directory, 2024.

Weather

January average low
22°F
July average high
86°F
Days 90°F or hotter
21 a year
Nights at or below freezing
119 a year
Rain and melted snow
48.2 inches a year
Snow
23 inches a year
Elevation
388 feet

Weather stations: Phillipsburg-easton Brg (4 miles away) and Belvidere Brg (10 miles away, rain and snow). Averages for 1991 to 2020.

Sources: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020; U.S. Geological Survey, 3D Elevation Program.

Getting around

Straight-line miles. The road is always longer, and as the book says, an interstate at 70 is a different trip from a farm road at 45. Check the real drive: St. Luke's Warren Hospital, Bethlehem, Philadelphia.

Warren County is in a metro area of 250,000 to 1 million people (USDA rural-urban code 2, on a scale where 1 is the biggest metro areas and 9 the most rural counties).

For a day

3 places on the National Register of Historic Places, including the Greenwich Historic District and Greenwich Historic District (Additional Documentation)).

National Park Service sites within about an hour:

  • Appalachian National Scenic Trail15 miles
  • Delaware Water Gap National Recreation Area17 miles
  • Middle Delaware National Scenic River18 miles
  • Morristown National Historical Park30 miles
  • Valley Forge National Historical Park42 miles
Know Greenwich?

Tell us what a visitor shouldn't miss, and what living there is really like. Write to Main Street at mainstreet@smalltownguide.com. The best notes from people who know the town will be added here.

Nearby

Straight-line miles.

Small towns

Smaller places

  • Lopatcong Overlook, NJ (unincorporated)453 people, 1 mile
  • Upper Pohatcong, NJ (unincorporated)1,876 people, 1 mile
  • Upper Stewartsville, NJ (unincorporated)128 people, 2 miles
  • Stewartsville, NJ (unincorporated)710 people, 2 miles
  • Delaware Park, NJ (unincorporated)374 people, 3 miles
  • Bloomsbury, NJ802 people, 4 miles
  • New Village, NJ (unincorporated)335 people, 4 miles
  • Morgan Hill, PA (unincorporated)1,348 people, 4 miles

Sources

  1. U.S. Census Bureau, Population Estimates (Vintage 2025)
  2. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates
  3. Federal Housing Finance Agency, House Price Index for counties (all transactions)
  4. U.S. Bureau of Economic Analysis, Regional Price Parities, 2024
  5. FBI, Crime in the United States, Table 8 (offenses known to law enforcement by city)
  6. Centers for Medicare & Medicaid Services, Hospital General Information
  7. National Center for Education Statistics, Common Core of Data, 2023-24 (via the Urban Institute Education Data Portal)
  8. National Center for Education Statistics, IPEDS institution directory, 2024
  9. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020
  10. U.S. Geological Survey, 3D Elevation Program
  11. National Park Service, National Register of Historic Places listings
  12. National Park Service, park unit boundaries
  13. USDA Economic Research Service, Rural-Urban Continuum Codes, 2023
  14. U.S. Census Bureau, 2025 Gazetteer files and 2020 urban areas

Census survey figures are estimates with a margin of error; we leave out any figure whose margin is too wide to be useful. Data last gathered October 5, 2026. See something wrong? Write to mainstreet@smalltownguide.com.