While I have not kept explicit records of the source of every single plate here, I would like to thank the following people for their significant help in building this archive:
This would not exist without your help.
Before Colorado license plates had explicit county codes (this practice began in 1932), they were issued in blocks to each county. Evidence of this goes as far back as 1916. Below are any examples of pre-1932 Jackson County plates the museum has been able to acquire.
Blocks marked "presumed" (1921, 1928, 1929) do not have explicit known license plate allotments, but the first Hinsdale County plate number is known for each year. The shown allotments have been extrapolated from those values.
Codes used:
In 1932, Colorado began using 1- and 2-digit prefixes to denote county of issuance on its license plates. They were numbered 1-63 (for 63 counties), and they were ordered based on population in the 1930 census. 63 used to denote Hinsdale County plates because it had the lowest population in the state at the time. Click here for a full list of Colorado's county codes and allotments.
Hinsdale's code was adapted as "ZN" in 1959 when the state moved to issuing letter prefixes instead of numerical ones. Click here for a full list of Colorado's county codes and allotments.
In 1982, the state of Colorado began to move away from two-letter prefixes in an effort to account for significant population growth, and the state began to use plates for more than one or two years. Jackson county passenger license plates adopted FGC, FGE, and FGE and their allotments, trailers now began with F, and various optional tags became available for registration. Click here for a full list of Colorado's county codes and allotments.