RANKING · 2010 CENSUS · 19 SHOWN OF 19

Highest Bulgarian population share, Colorado counties · 2010

Colorado counties ranked by the share of all residents who are Bulgarian ancestry (2023 American Community Survey). A concentration measure: Bulgarian residents as a percentage of total population. This list covers the 19 counties in Colorado that qualify, ranked against each other statewide.

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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

Highest Bulgarian population share by state

RANKPLACESTATEPOPBULGARIAN SHAREVS 2000

01Grand County, COCO16,4960.5%–

02Costilla County, COCO3,6790.2%–

03Summit County, COCO31,5170.2%–

04Adams County, COCO554,6680.1%–

05Bent County, COCO5,7160.1%–

06Chaffee County, COCO20,8310.1%–

07Larimer County, COCO377,2920.1%–

08Eagle County, COCO54,2910.1%–

09Delta County, COCO32,1780.1%–

10Douglas County, COCO399,3960.1%–

11Weld County, COCO378,4260.1%–

12Jefferson County, COCO580,4510.1%–

13Routt County, COCO25,3290.0%–

14Boulder County, COCO328,5600.0%–

15Custer County, COCO5,5900.0%–

16Denver County, COCO740,6130.0%–

17La Plata County, COCO56,8980.0%–

18Arapahoe County, COCO673,8200.0%–

19El Paso County, COCO757,0400.0%–

SHOWING 1–19 OF 19

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UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES