Largest Romanian population, US counties · 2020
US counties ranked by the number of residents who are Romanian ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Cook County, Illinois leads at 21,874. 1,667 counties qualify in total. California carries 5 of the top 25 entries.
Romanian Americans: full group profile →UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS
Frequently asked
Which county has the highest romanian population?
Cook County, Illinois ranks #1 with 21,874 (2020 Decennial Census).
What are the top 5 counties by romanian population?
Cook County, Illinois, Los Angeles County, California, Maricopa County, Arizona, New York County, New York, Queens County, New York.
How many counties are in this ranking?
1,667 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.
How is romanian population measured?
Number of residents who are Romanian ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2020 Decennial Census.