Important sources of health insurance coverage for children in the United States are programs supported by federal and state tax dollars. The National Health Interview Survey (2022) reported that nearly 44% of children aged 0 to 17 in the U.S. had publicly supported health insurance coverage. This includes child coverage through Medicaid, the Children's Health Insurance Program (CHIP), Medicare, military health plans, and other government-sponsored health programs.  The main sources of public health insurance coverage for U.S. children are Medicaid and CHIP.  Medicaid is the joint federal-state health insurance program for eligible individuals with limited incomes, while CHIP is a joint state-federal effort to make available health insurance for children from families with low incomes who do not otherwise qualify for Medicaid coverage.  As of January 2023, federal reports indicate that there were about 41.9 million American children enrolled in Medicaid or separate CHIP programs.

That same January 2023 data reveals that the five-state Rocky Mountain region had almost 1.3 million children enrolled in either Medicaid or CHIP programs.  Of the total January 2023 Medicaid child and CHIP enrollment reported by the District of Columbia and 49 states, the five Rocky Mountain states accounted for about 3% of the national total.  Here is a summary look at Medicaid child and CHIP enrollment in the Rocky Mountain region as of January 2023:

Medicaid Child and CHIP Enrollment in the Rocky Mountain Region

Area Name	Enrollment	% of U.S. Total
Colorado	648,068	1.5%
Idaho	211,514	0.5%
Montana	132,122	0.3%
Utah	239,105	0.6%
Wyoming	52,932	0.1%
Region	1,283,741	3.0%
United States (1)	41,859,753	100.0%

(1) National figures are for the 49 states and the District of Columbia that reported child enrollment data for January 2023

Source: Medicaid.gov Enrollment Reports as of January 2023