Zip Code 19720
Historic New Castle, Delaware — New Castle County
📍 ZIP code 19720 is in Historic New Castle, New Castle County, Delaware.
ZIP code 19720 is located in Historic New Castle, New Castle County, Delaware. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 60,593. The area code for ZIP code 19720 is 302.
Quick Answer
Zip code 19720 is in Historic New Castle, Delaware (New Castle County). It has a population of 60,593, median household income of $75,985, and median home value of $242,600.
Population
60,593
Income
$75,985
Home Value
$242,600
Climate
87°F / 26°F
About Zip Code 19720
Zip code 19720 is located in Historic New Castle, Delaware, within New Castle County. Home to approximately 60,593 residents, this area sits at an elevation of 40 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 302.
The median household income is $75,985 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $242,600, and the cost of living index is 88 (12% below the national average of 100).
Summers average a high of 87°F while winters drop to 26°F. The area receives about 45 in of rain and 20 in of snow annually. The zip code covers 37.1 square miles of land area and 3.9 square miles of water.
Key Statistics
60,593
$75,985
$242,600
Eastern (EST/EDT)
302
40 ft
37.1 sq mi
39.7
24,262
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Compare With Nearby Zip Codes
| Metric | 19720 | 19804 | 08070 | 19706 | 19713 | 08023 |
|---|---|---|---|---|---|---|
| City | Historic New Castle, DE | Wilmington, DE | Pennsville, NJ | Delaware City, DE | Newark, DE | Deepwater, NJ |
| Population | 60,593 | 18,231 | 12,477 | 2,059 | 30,549 | 289 |
| Median Income | $75,985 | $76,204 | $74,006 | $77,143 | $72,850 | $87,576 |
| Home Value | $242,600 | $244,700 | $194,400 | $244,600 | $267,500 | $175,800 |
| Cost of Living | 88 | 88 | 78 | 86 | 89 | 60 |
| Median Age | 39.7 | 41 | 42.3 | 40.3 | 38.2 | 39 |
Cost of Living
100 = National Average. Historic New Castle's cost of living is 12% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
3.2x
Demographics
Zip code 19720 has a population of 60,593 people with a median age of 39.7. There are 24,262 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Historic New Castle (19720) population trend from 2010 to 2024
↑ 31.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
26°F
45 in
20 in
Historic New Castle experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 26°F. The area receives about 20 in of snow per year.
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Housing & Economy
Median Home Value
$242,600
Median Household Income
$75,985
With 24,262 housing units across 37.1 square miles, 19720 has a housing density of 654 units per square mile. The home price-to-income ratio is 3.2x.
Location & Geography
Latitude
39.6469°
Longitude
-75.6049°
Land Area
37.1 sq mi
Water Area
3.9 sq mi
Nearby Zip Codes
Zip codes closest to 19720 (Historic New Castle, DE) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 19720's $75,985. A way to compare Historic New Castle 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 19720 (Historic New Castle, DE). 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 Historic New Castle, Delaware?
Historic New Castle, Delaware uses zip code 19720.
What county is zip code 19720 in?
Zip code 19720 is located in New Castle County, Delaware.
What is the population of zip code 19720?
The population of zip code 19720 is 60,593 with a median age of 39.7.
Is 19720 in Historic New Castle, Delaware?
Yes, zip code 19720 is in Historic New Castle, New Castle County, Delaware. The area code is 302.
Frequently Asked Questions
What city is zip code 19720 in?
Zip code 19720 is in Historic New Castle, Delaware. It is part of New Castle County and uses the Eastern (EST/EDT) timezone.
What is zip code 19720?
Zip code 19720 is a U.S. postal code in Historic New Castle, Delaware (New Castle County). It has a population of 60,593 and covers 37.1 square miles.
What is the population of zip code 19720?
The population of zip code 19720 (Historic New Castle, DE) is 60,593 with a median age of 39.7. There are approximately 24,262 housing units in this area.
What is the median income in zip code 19720?
The median household income in zip code 19720 (Historic New Castle, DE) is $75,985 per year. The cost of living index is 88 (100 = national average).
What is the average home price in zip code 19720?
The median home value in zip code 19720 (Historic New Castle, DE) is $242,600. The cost of living index is 88 compared to the national average of 100.
What county is zip code 19720 in?
Zip code 19720 is located in New Castle County, Delaware. The primary city is Historic New Castle.
What is the area code for zip code 19720?
Zip code 19720 in Historic New Castle, DE uses area code 302. It is located in the Eastern (EST/EDT) timezone.
Is zip code 19720 a good place to live?
Zip code 19720 (Historic New Castle, DE) has a cost of living index of 88 (100 = national average), a median household income of $75,985, and median home values of $242,600. The median age is 39.7. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 19720?
The cost of living index for zip code 19720 (Historic New Castle, DE) is 88, where 100 represents the national average. This area is below the national average. Median home value: $242,600.
What schools serve zip code 19720?
Zip code 19720 in Historic New Castle, Delaware is served by the local school district of New Castle 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.