Delaware cities by population: sort and filter 57 cities.
Delaware cities by population lists all 57 included cities in one sortable table (U.S. Census Bureau Vintage 2025). Wilmington leads at 73,512 residents, followed by Dover at 40,592. Growth figures compare the April 2020 census base with the July 2025 estimate within one vintage.
Delaware cities ranked by Census Vintage 2025 estimates.
Delaware ranking uses Census Vintage 2025 Population Estimates Program data as of July 1, 2025. Ranks are state-scoped, using standard competition ranking ("1224"): tied cities share the lower rank and the next rank is skipped. Growth shown is 2020 base → 2025 — within-vintage; no 2010→2025 figures appear here per methodology §6.
This page covers every city for which Census publishes annual PEP estimates in Delaware: standard incorporated places, any consolidated city-county governments, and (where applicable) DC or Urban Honolulu. Census-designated places (CDPs) are excluded with one named exception — Urban Honolulu. In states like Rhode Island, Connecticut, and Massachusetts, many residents live in towns and townships rather than incorporated cities; PEP does not publish annual estimates for those places (a V1 limitation), so the city counts for MCD-heavy states may be lower than expected.