Explore the Family Name Coldiron

The meaning of Coldiron

Americanized form (translation into English) of German Kalteis or its rare variant Kalteisen, an occupational name for a blacksmith, from Middle High German kalt ‘cold’ + īsen ‘iron’.

Dictionary of American Family Names, 2nd edition, © Oxford University Press, 2022.

How common is the last name Coldiron in the United States?

Based on the Decennial U.S. Census data, the surname Coldiron has seen a decrease in popularity over a decade from 2000 to 2010. In 2000, it was ranked 14,370th most popular name but dropped to 14,920th by 2010, recording a decrease of 3.83 percent. However, despite the dip in rank, the count of people bearing the surname increased slightly from 1,910 in 2000 to 1,984 in 2010, an increase of 3.87 percent. The proportion per 100,000 people also fell slightly from 0.71 to 0.67 during this period.

	2000	2010	Change
Rank	#14,370	#14,920	-3.83%
Count	1,910	1,984	3.87%
Proportion per 100k	0.71	0.67	-5.63%

Race and Ethnicity of people with the last name Coldiron

The ethnic identity associated with the surname Coldiron saw some changes between 2000 and 2010 according to the Decennial U.S. Census data. There were no recorded instances of the surname among Asian/Pacific Islander or Black individuals in either year. The largest group, Whites, saw a slight decrease from 96.18 percent in 2000 to 95.16 percent in 2010. Meanwhile, those identifying as two or more races increased their representation from 1.15 percent to 1.66 percent, a significant change of 44.35 percent. Similarly, the Hispanic representation also grew from 1.47 percent to 1.97 percent. The only other recorded ethnicity, American Indian and Alaskan Native, saw a decrease from 0.99 percent to 0.66 percent.

	2000	2010	Change
White	96.18%	95.16%	-1.06%
Hispanic	1.47%	1.97%	34.01%
Two or More Races	1.15%	1.66%	44.35%
American Indian and Alaskan Native	0.99%	0.66%	-33.33%
Asian/Pacific Islander	0%	0%	0%
Black	0%	0%	0%