Ranking of California Counties By Percentage of Population with Icelander Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 6.42K people in California with Icelander ancestry (0.02% of California population). Among all California counties, Lassen County had the highest percentage of its population with Icelander ancestry (0.18%), followed by Siskiyou County (0.14%), and Mendocino County (0.11%).

The chart and table below shows the top 10 counties with high percentage of its population having Icelander ancestry.

You can see similar information for other states and for other ancestry groups in California.

Data Source: US Census Bureau.
Ranking of California Counties By Percentage of Population with Icelander Ancestry in 2021
Lassen County
Siskiyou County
Mendocino County
Santa Cruz County
Tuolumne County
Butte County
Humboldt County
Lake County
Santa Clara County
El Dorado County
Ranking of California Counties By Percentage of Population with Icelander Ancestry in 2021
0 of 0
Rank County Percentage of Pop. (%)
1 Lassen County 0.18
2 Siskiyou County 0.14
3 Mendocino County 0.11
4 Santa Cruz County 0.10
5 Tuolumne County 0.09
6 Butte County 0.04
6 Humboldt County 0.04
6 Lake County 0.04
6 Santa Clara County 0.04
7 El Dorado County 0.03
7 Monterey County 0.03
7 Yolo County 0.03
8 Amador County 0.02
8 Contra Costa County 0.02
8 Madera County 0.02
8 Marin County 0.02
8 Nevada County 0.02
8 Orange County 0.02
8 San Bernardino County 0.02
8 San Diego County 0.02
8 San Francisco County 0.02
8 San Mateo County 0.02
8 Shasta County 0.02
8 Sonoma County 0.02
8 Ventura County 0.02
9 Alameda County 0.01
9 Kern County 0.01
9 Kings County 0.01
9 Los Angeles County 0.01
9 Placer County 0.01
9 Riverside County 0.01
9 Sacramento County 0.01
9 San Joaquin County 0.01
9 Solano County 0.01
9 Stanislaus County 0.01
10 Napa County 0.004
10 San Luis Obispo County 0.004
10 Santa Barbara County 0.004
11 Fresno County 0.002
12 Tulare County 0.001