Zip Code 07866
Dover, New Jersey — Morris County
📍 ZIP code 07866 is in Dover, Morris County, New Jersey.
ZIP code 07866 is located in Dover, Morris County, New Jersey. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 22,632. The area code for ZIP code 07866 is 908.
Quick Answer
Zip code 07866 is in Dover, New Jersey (Morris County). It has a population of 22,632, median household income of $123,828, and median home value of $434,200.
Population
22,632
Income
$123,828
Home Value
$434,200
Climate
83°F / 19°F
About Zip Code 07866
Zip code 07866 is located in Dover, New Jersey, within Morris County. Home to approximately 22,632 residents, this area sits at an elevation of 836 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 908.
The median household income is $123,828 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $434,200, and the cost of living index is 154 (54% above the national average of 100).
Summers average a high of 83°F while winters drop to 19°F. The area receives about 52 in of rain and 28 in of snow annually. The zip code covers 22.2 square miles of land area and 2.3 square miles of water.
Key Statistics
22,632
$123,828
$434,200
Eastern (EST/EDT)
908
836 ft
22.2 sq mi
45.3
8,863
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Compare With Nearby Zip Codes
| Metric | 07866 | 07842 | 07005 | 07801 | 07834 | 07046 |
|---|---|---|---|---|---|---|
| City | Dover, NJ | Hibernia, NJ | Boonton, NJ | Dover, NJ | Denville, NJ | Mountain Lakes, NJ |
| Population | 22,632 | 52 | 15,240 | 26,725 | 18,203 | 4,535 |
| Median Income | $123,828 | $0 | $126,411 | $78,053 | $162,644 | $250,001 |
| Home Value | $434,200 | $0 | $565,900 | $369,400 | $552,300 | $915,100 |
| Cost of Living | 154 | 100 | 183 | 111 | 193 | 250 |
| Median Age | 45.3 | -666666666 | 42 | 40 | 41.6 | 43.6 |
Cost of Living
100 = National Average. Dover's cost of living is 54% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.5x
Demographics
Zip code 07866 has a population of 22,632 people with a median age of 45.3. There are 8,863 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Dover (07866) population trend from 2010 to 2024
↓ -4.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
19°F
52 in
28 in
Dover experiences warm summers with average highs around 83°F. Winters are cold with lows averaging 19°F. The area receives about 28 in of snow per year.
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Housing & Economy
Median Home Value
$434,200
Median Household Income
$123,828
With 8,863 housing units across 22.2 square miles, 07866 has a housing density of 399 units per square mile. The home price-to-income ratio is 3.5x.
Location & Geography
Latitude
40.9550°
Longitude
-74.4880°
Land Area
22.2 sq mi
Water Area
2.3 sq mi
Nearby Zip Codes
Zip codes closest to 07866 (Dover, NJ) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 07866's $123,828. A way to compare Dover to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 07866 (Dover, NJ). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Dover, New Jersey?
Dover, New Jersey uses zip code 07866.
What county is zip code 07866 in?
Zip code 07866 is located in Morris County, New Jersey.
What is the population of zip code 07866?
The population of zip code 07866 is 22,632 with a median age of 45.3.
Is 07866 in Dover, New Jersey?
Yes, zip code 07866 is in Dover, Morris County, New Jersey. The area code is 908.
Frequently Asked Questions
What city is zip code 07866 in?
Zip code 07866 is in Dover, New Jersey. It is part of Morris County and uses the Eastern (EST/EDT) timezone.
What is zip code 07866?
Zip code 07866 is a U.S. postal code in Dover, New Jersey (Morris County). It has a population of 22,632 and covers 22.2 square miles.
What is the population of zip code 07866?
The population of zip code 07866 (Dover, NJ) is 22,632 with a median age of 45.3. There are approximately 8,863 housing units in this area.
What is the median income in zip code 07866?
The median household income in zip code 07866 (Dover, NJ) is $123,828 per year. The cost of living index is 154 (100 = national average).
What is the average home price in zip code 07866?
The median home value in zip code 07866 (Dover, NJ) is $434,200. The cost of living index is 154 compared to the national average of 100.
What county is zip code 07866 in?
Zip code 07866 is located in Morris County, New Jersey. The primary city is Dover.
What is the area code for zip code 07866?
Zip code 07866 in Dover, NJ uses area code 908. It is located in the Eastern (EST/EDT) timezone.
Is zip code 07866 a good place to live?
Zip code 07866 (Dover, NJ) has a cost of living index of 154 (100 = national average), a median household income of $123,828, and median home values of $434,200. The median age is 45.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 07866?
The cost of living index for zip code 07866 (Dover, NJ) is 154, where 100 represents the national average. This area is above the national average. Median home value: $434,200.
What schools serve zip code 07866?
Zip code 07866 in Dover, New Jersey is served by the local school district of Morris County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.