ZIP Code Tabulation Area · Delaware

ZIP Code 19731: New Castle County, DE

ZIP Code 19731 (New Castle County, Delaware) has an estimated 655 residents in 235 households. The median household income is $71,282, the median home value is $369,300 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Some estimates have a large margin of error. 5 figures for this ZIP (population, median age, households, owner-occupied, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

655*

Margin of error ±509· estimate has a large margin of error

Median household income

$71,282

Margin of error ±$21,280

Median home value

$369,300

Margin of error ±$82,897

Median gross rent

—

Margin of error not available

Median age

66.1 yrs*

Margin of error ±37.6 yrs· estimate has a large margin of error

Mean travel time to work

39.5 min*

Margin of error ±51.0 min· estimate has a large margin of error

How ZIP 19731 compares with Delaware and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 1973166.1 yrs*Delaware41.6 yrsUnited States38.9 yrs

Median household income

ZIP 19731$71,282Delaware$84,954United States$80,734

Per capita income

ZIP 19731$27,471Delaware$45,375United States$44,673

Poverty rate

ZIP 197314.3%Delaware10.4%United States12.5%

Unemployment rate

ZIP 197310.0%Delaware5.1%United States5.2%

Bachelor's degree or higher

ZIP 197310.0%Delaware35.8%United States35.7%

Median home value

ZIP 19731$369,300Delaware$352,000United States$332,700

Median gross rent

ZIP 19731—Delaware$1,401/moUnited States$1,413/mo

Owner-occupied homes

ZIP 1973192.3%*Delaware73.0%United States65.2%

Mean travel time to work

ZIP 1973139.5 min*Delaware26.0 minUnited States26.4 min

Worked from home

ZIP 197310.0%Delaware15.0%United States15.1%

All figures for ZIP 19731

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 19731 — ACS 2020–2024 5-year estimates
MeasureZIP 19731Margin of errorDelawareUnited States
Total population655*±5091,021,191334,922,499
Median age66.1 yrs*±37.6 yrs41.6 yrs38.9 yrs
Households235*±130402,038129,227,496
Median household income$71,282±$21,280$84,954$80,734
Per capita income$27,471±$10,082$45,375$44,673
Poverty rate4.3%±5.3 pts10.4%12.5%
Unemployment rate0.0%±7.0 pts5.1%5.2%
Bachelor's degree or higher0.0%±5.2 pts35.8%35.7%
Median home value$369,300±$82,897$352,000$332,700
Median gross rent——$1,401/mo$1,413/mo
Owner-occupied homes92.3%*±20.1 pts73.0%65.2%
Mean travel time to work39.5 min*±51.0 min26.0 min26.4 min
Worked from home0.0%±7.0 pts15.0%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 19731
GroupZIP 19731DelawareUnited States
White alone, not Hispanic or Latino100.0%58.1%57.4%
Black or African American alone, not Hispanic or Latino0.0%21.4%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino0.0%4.3%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.0%0.5%0.6%
Two or more races, not Hispanic or Latino0.0%4.5%4.3%
Hispanic or Latino (of any race)0.0%11.0%19.3%

Where ZIP 19731 is

State
Delaware
Main county
New Castle County
Largest overlapping place
Port Penn (16% of the ZIP's land area)
Land area
2.53 sq mi· about 259 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in New Castle County

19701 New Castle County, DE19702 Glasgow, DE19703 Claymont, DE19706 Delaware City, DE19707 Hockessin, DE19709 New Castle County, DE19711 Newark, DE19713 Brookside, DE19717 Newark, DE19720 New Castle County, DE19730 Odessa, DE19732 New Castle County, DE19733 St. Georges, DE19734 New Castle County, DE19736 Hockessin, DE19801 Wilmington, DE19802 Wilmington, DE19803 New Castle County, DE19804 New Castle County, DE19805 Wilmington, DE19806 Wilmington, DE19807 New Castle County, DE19808 New Castle County, DE19809 Wilmington, DE

See every ZIP code in Delaware, or compare ZIP 19731 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.