List of 57 Zip Codes in New Castle County, Delaware

On this page, we'll list out the 57 New Castle County, Delaware ZIP codes we have, including the land area and county name of each code.

Delaware is the 50th largest state by total land area, with a land area of 2,489 square miles (6,446 square kilometers) and has a total population of 967,679 people as of the most recent U.S. Census survey.

New Castle County makes up approximately 54.53% of the total land area for Delaware and we have 57 zip codes for the county in our database, which you can see details of below, with land area information for each zip code.

ZIP Code Land Area (Sq. Meters) Land Area (Sq. Miles) Land Area (Sq. Kilometers)
19701 68,921,000 27 69
19701 68,921,000 27 69
19702 73,325,400 28 73
19702 73,325,400 28 73
19702 73,325,400 28 73
19703 10,163,600 4 10
19706 9,543,810 4 10
19707 34,191,400 13 34
19707 34,191,400 13 34
19707 34,191,400 13 34
19709 206,236,000 80 206
19709 206,236,000 80 206
19711 70,921,100 27 71
19711 70,921,100 27 71
19711 70,921,100 27 71
19711 70,921,100 27 71
19713 35,454,100 14 35
19713 35,454,100 14 35
19716 136,115 0 0
19717 481,212 0 0
19720 96,096,600 37 96
19720 96,096,600 37 96
19720 96,096,600 37 96
19730 3,542,020 1 4
19734 202,496,000 78 202
19734 202,496,000 78 202
19736 343,561 0 0
19801 10,722,000 4 11
19802 8,216,060 3 8
19802 8,216,060 3 8
19803 32,633,400 13 33
19804 19,366,700 7 19
19804 19,366,700 7 19
19804 19,366,700 7 19
19805 13,776,200 5 14
19805 13,776,200 5 14
19806 4,992,920 2 5
19807 50,801,000 20 51
19807 50,801,000 20 51
19807 50,801,000 20 51
19808 36,215,700 14 36
19808 36,215,700 14 36
19808 36,215,700 14 36
19809 18,110,800 7 18
19809 18,110,800 7 18
19809 18,110,800 7 18
19809 18,110,800 7 18
19810 20,450,500 8 20
19810 20,450,500 8 20
19810 20,450,500 8 20
19938 126,270,000 49 126
19938 126,270,000 49 126
19938 126,270,000 49 126
19977 215,286,000 83 215
19977 215,286,000 83 215
19977 215,286,000 83 215
21912 267,635 0 0

More Counties in Delaware

If you want to search and find zip codes for different counties in Delaware, the list below contains links to each of the 4 Delaware counties we have data for.

Data Source(s)

All of the zip code data on this page is sourced from the United States Census Bureau geography reference files.

Link To or Reference This Page

We spent a lot of time downloading, cleaning, merging, and formatting the data that is shown on the site.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source. We appreciate your support!

  • "List of 57 Zip Codes in New Castle County, Delaware". NameCensus.com. Accessed on December 1, 2023. https://namecensus.com/zip-codes/delaware/new-castle-county/.

  • "List of 57 Zip Codes in New Castle County, Delaware". NameCensus.com, https://namecensus.com/zip-codes/delaware/new-castle-county/. Accessed 1 December, 2023

  • List of 57 Zip Codes in New Castle County, Delaware. NameCensus.com. Retrieved from https://namecensus.com/zip-codes/delaware/new-castle-county/.