Largest Swiss population, US counties · 2010
US counties ranked by the number of residents who are Swiss ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Lancaster County, Pennsylvania leads at 18,762. 2,687 counties qualify in total. California carries 5 of the top 25 entries.
UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest swiss population?
Lancaster County, Pennsylvania ranks #1 with 18,762 (2010 American Community Survey).
What are the top 5 counties by swiss population?
Lancaster County, Pennsylvania, Los Angeles County, California, Maricopa County, Arizona, Salt Lake County, Utah, King County, Washington.
How many counties are in this ranking?
2,687 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 ACS 5-year data.
How is swiss population measured?
Number of residents who are Swiss ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2010).