The list is the FIPS codes of Delaware counties.
All the FIPS codes are starting with 10.
County
FIPS Code
Kent
10001
New Castle
10003
Sussex
10005
All codes are cited from United States Department of Agriculture [28].
Data Source
[28] United States Department of Agriculture. County FIPS Codes. Retrieved October 31, 2020, from https://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/home/?cid=nrcs143_013697