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Idaho Medicaid enrollment

306,334

People enrolled in Medicaid and CHIP in Idaho, July 2026 (preliminary)

−3.1% since July 2025 (316,230); −23.3% since July 2021 (399,433)

Source: Centers for Medicare and Medicaid Services, Medicaid and CHIP Enrollment Data. Data period July 2026. Status: preliminary. Published . Newest release as of ; next expected by December 2026.

Point-in-time count of individuals enrolled in Medicaid or CHIP as of the last day of the reporting month, comprehensive-benefit enrollees only.

Comparison

Among 50 states and the District of Columbia, Idaho ranked 43rd highest in December 2025 on Medicaid and CHIP enrollment, share of population from the Centers for Medicare and Medicaid Services. The District of Columbia was highest at 37.3% and Utah lowest at 9.4%. The headline figure above is in July 2026; this ranking is in December 2025.

Historical data

Idaho Medicaid enrollment, September 2013 to July 2026Idaho Medicaid enrollment, September 2013 to July 2026. 3 series. Medicaid and CHIP enrollment: 238,150 in September 2013, 306,334 in July 2026.0200k400k600k201520202025Medicaidand CHIPenrollmentMedicaidenrollmentCHIPenrollmentPeopleIdaho Medicaid enrollment, September 2013 to July 2026Idaho Medicaid enrollment, September 2013 to July 2026. 3 series. Medicaid and CHIP enrollment: 238,150 in September 2013, 306,334 in July 2026.0200k400k600k201520202025Medicaid andCHIPenrollmentMedicaidenrollmentCHIPenrollmentPeopleIdaho Medicaid enrollment, September 2013 to July 2026Idaho Medicaid enrollment, September 2013 to July 2026. 3 series. Medicaid and CHIP enrollment: 238,150 in September 2013, 306,334 in July 2026.0200k400k600k201520202025Medicaid andCHIP enrollmentMedicaidenrollmentCHIP enrollmentPeople

Source: CMS, Medicaid and CHIP Enrollment Data.

Data table (111 rows)
PeriodMedicaid and CHIP enrollment (people)Medicaid enrollment (people)CHIP enrollment (people)
September 2013238,150n/an/a
June 2017294,792272,22822,564
July 2017294,571272,08422,487
August 2017296,356273,86722,489
September 2017297,066274,80922,257
October 2017297,445275,24622,199
November 2017296,910274,80222,108
December 2017297,688275,69321,995
January 2018286,089260,53825,551
February 2018284,104259,03225,072
March 2018277,803252,52725,276
April 2018269,430244,99424,436
May 2018271,305246,82024,485
June 2018273,002248,50224,500
July 2018274,741250,29724,444
August 2018276,978252,55024,428
September 2018278,382254,01324,369
October 2018278,870254,49224,378
November 2018280,331256,11024,221
December 2018280,570256,56524,005
January 2019267,944241,18726,757
February 2019269,916243,37926,537
March 2019271,203244,69126,512
April 2019272,589246,37726,212
May 2019273,856247,93925,917
June 2019274,946249,34625,600
July 2019265,493239,69425,799
August 2019259,850233,93025,920
September 2019262,616236,61426,002
October 2019264,965238,98625,979
November 2019266,732240,67626,056
December 2019267,602241,54926,053
January 2020313,122285,35427,768
February 2020319,534291,74527,789
March 2020325,353298,02227,331
April 2020332,920305,50927,411
May 2020337,725311,10526,620
June 2020342,341315,85526,486
July 2020347,777320,90726,870
August 2020354,061326,83927,222
September 2020359,001331,92027,081
October 2020363,581336,48527,096
November 2020373,786346,62627,160
December 2020376,688348,77527,913
January 2021383,589354,38229,207
February 2021386,821357,50829,313
March 2021391,548361,62629,922
April 2021395,586364,50731,079
May 2021396,646365,35931,287
June 2021395,822364,39131,431
July 2021399,433367,33132,102
August 2021398,124364,71233,412
September 2021400,157366,17233,985
October 2021403,570369,19434,376
November 2021406,367371,88234,485
December 2021409,836375,24234,594
January 2022413,410378,46534,945
February 2022412,356377,69834,658
March 2022415,362380,21635,146
April 2022417,777382,17035,607
May 2022419,898384,13235,766
June 2022426,582390,00336,579
July 2022430,307393,68736,620
August 2022432,974395,65237,322
September 2022436,769398,91137,858
October 2022445,060406,51838,542
November 2022449,203410,46638,737
December 2022452,903413,98838,915
January 2023455,548416,21939,329
February 2023457,355418,00239,353
March 2023460,085420,63839,447
April 2023443,371407,00236,369
May 2023432,712398,92433,788
June 2023385,133357,57527,558
July 2023363,567337,97025,597
August 2023344,660320,49824,162
September 2023314,488293,22521,263
October 2023318,932297,24221,690
November 2023336,928314,17222,756
December 2023338,380315,49822,882
January 2024338,912316,17522,737
February 2024335,633313,13122,502
March 2024334,419312,26522,154
April 2024333,770311,82921,941
May 2024331,346309,71621,630
June 2024324,920304,59020,330
July 2024321,164300,83320,331
August 2024317,463297,15520,308
September 2024315,795295,68520,110
October 2024317,061296,69320,368
November 2024318,399297,95020,449
December 2024319,959299,42620,533
January 2025321,003300,47620,527
February 2025320,307299,87820,429
March 2025321,720301,26120,459
April 2025320,470300,43420,036
May 2025318,814298,93219,882
June 2025315,910296,25119,659
July 2025316,230296,66119,569
August 2025315,337295,85519,482
September 2025315,251295,73219,519
October 2025314,788295,13419,654
November 2025313,479293,77719,702
December 2025313,952294,10419,848
January 2026314,295294,40419,891
February 2026314,249294,37019,879
March 2026315,085295,30019,785
April 2026316,882297,06419,818
May 2026312,622293,04319,579
June 2026307,060287,98419,076
July 2026306,334287,47218,862

Compared with other states

Every state is compared on Medicaid and CHIP enrollment, share of population from the Centers for Medicare and Medicaid Services: Medicaid and CHIP enrollment for the month divided by the Census Bureau's July 1 population estimate for the calendar year the month falls in, times 100. A month in a year the population estimate has not yet reached carries no figure. The headline figure above is in July 2026; this comparison is in December 2025.

Percent

  1. District of Columbia37.3%
  2. New York32.7%
  3. California32.4%
  4. Oregon30.6%
  5. Washington22.4%
  6. Nevada22.1%
  7. Montana18.6%
  8. Idaho15.5%
  9. New Hampshire12.5%
  10. Wyoming10.3%
  11. Utah9.4%

Source: CMS, Medicaid and CHIP enrollment, share of population (computed by Understand Idaho).

Data table (51 rows)
StateDecember 2025
1. District of Columbia37.3%
2. New York32.7%
3. California32.4%
4. New Mexico32.1%
5. Oregon30.6%
6. Louisiana30.4%
7. Alaska28.8%
8. Kentucky28.8%
9. West Virginia27.8%
10. Hawaii27.1%
11. Rhode Island26.8%
12. Arkansas25.9%
13. North Carolina25.7%
14. Connecticut24.6%
15. Maine24.0%
16. Illinois23.8%
17. Oklahoma23.5%
18. Vermont23.5%
19. Pennsylvania23.0%
20. Ohio22.9%
21. Delaware22.7%
22. Michigan22.7%
23. Maryland22.5%
24. Washington22.4%
25. Massachusetts22.2%
26. Indiana22.1%
27. Nevada22.1%
28. Arizona22.0%
29. Iowa20.7%
30. Missouri20.2%
31. Mississippi20.1%
32. Minnesota19.9%
33. Colorado19.8%
34. Tennessee19.3%
35. Virginia19.0%
36. Wisconsin18.9%
37. Montana18.6%
38. New Jersey18.5%
39. Alabama18.2%
40. South Carolina18.0%
41. Georgia16.7%
42. Nebraska16.7%
43. Idaho15.5%
44. Florida15.3%
45. South Dakota14.6%
46. Kansas13.6%
47. North Dakota13.3%
48. Texas13.0%
49. New Hampshire12.5%
50. Wyoming10.3%
51. Utah9.4%

Share of residents enrolled

15.5% in December 2025 (estimate). Medicaid and CHIP enrollment for the month divided by the Census Bureau's July 1 population estimate for the calendar year the month falls in, times 100. A month in a year the population estimate has not yet reached carries no figure.

Share of residents enrolled, September 2013 to December 2025Share of residents enrolled, September 2013 to December 2025. Medicaid and CHIP enrollment, share of population: 14.8% in September 2013, 15.5% in December 2025.0.0%10.0%20.0%30.0%201520202025PercentShare of residents enrolled, September 2013 to December 2025Share of residents enrolled, September 2013 to December 2025. Medicaid and CHIP enrollment, share of population: 14.8% in September 2013, 15.5% in December 2025.0.0%10.0%20.0%30.0%201520202025PercentShare of residents enrolled, September 2013 to December 2025Share of residents enrolled, September 2013 to December 2025. Medicaid and CHIP enrollment, share of population: 14.8% in September 2013, 15.5% in December 2025.0.0%10.0%20.0%30.0%201520202025Percent

Source: CMS, Medicaid and CHIP enrollment, share of population (computed by Understand Idaho).

Data table (104 rows)
PeriodMedicaid and CHIP enrollment, share of population (percent)
September 201314.8%
June 201717.2%
July 201717.1%
August 201717.3%
September 201717.3%
October 201717.3%
November 201717.3%
December 201717.3%
January 201816.3%
February 201816.2%
March 201815.9%
April 201815.4%
May 201815.5%
June 201815.6%
July 201815.7%
August 201815.8%
September 201815.9%
October 201815.9%
November 201816.0%
December 201816.0%
January 201915.0%
February 201915.1%
March 201915.2%
April 201915.3%
May 201915.3%
June 201915.4%
July 201914.9%
August 201914.5%
September 201914.7%
October 201914.8%
November 201914.9%
December 201915.0%
January 202016.9%
February 202017.3%
March 202017.6%
April 202018.0%
May 202018.3%
June 202018.5%
July 202018.8%
August 202019.1%
September 202019.4%
October 202019.7%
November 202020.2%
December 202020.4%
January 202120.1%
February 202120.3%
March 202120.6%
April 202120.8%
May 202120.8%
June 202120.8%
July 202121.0%
August 202120.9%
September 202121.0%
October 202121.2%
November 202121.3%
December 202121.5%
January 202221.3%
February 202221.2%
March 202221.4%
April 202221.5%
May 202221.6%
June 202222.0%
July 202222.1%
August 202222.3%
September 202222.5%
October 202222.9%
November 202223.1%
December 202223.3%
January 202323.1%
February 202323.2%
March 202323.3%
April 202322.5%
May 202322.0%
June 202319.5%
July 202318.5%
August 202317.5%
September 202316.0%
October 202316.2%
November 202317.1%
December 202317.2%
January 202416.9%
February 202416.8%
March 202416.7%
April 202416.7%
May 202416.6%
June 202416.2%
July 202416.1%
August 202415.9%
September 202415.8%
October 202415.8%
November 202415.9%
December 202416.0%
January 202515.8%
February 202515.8%
March 202515.9%
April 202515.8%
May 202515.7%
June 202515.6%
July 202515.6%
August 202515.5%
September 202515.5%
October 202515.5%
November 202515.4%
December 202515.5%

Source

Organization
Centers for Medicare and Medicaid Services
Dataset
Medicaid and CHIP Enrollment Data
Geography
States and the District of Columbia
Time coverage
2013-09 to 2026-05
Update frequency
Monthly
Published
Newest release as of
; next expected by December 2026
Original file
https://download.medicaid.gov/data/pi-dataset-august-2026-release.csv
Methodology
https://data.medicaid.gov/api/1/metastore/schemas/data-dictionary/items/7d80cfd8-3266-4c55-8436-948b7c55b9dd
License
Public domain. U.S. federal government work.
Our copy
Medicaid and CHIP Enrollment Data

Caveats

  • State-reported data, not an independently audited count; Medicaid-only and CHIP-only breakouts begin June 2017 for some states, though the combined total goes back to September 2013.
  • Each month is first published preliminary, then revised to final; this dataset stores the final figure once CMS has one.
  • CHIP enrollment includes separate CHIP and Medicaid-expansion CHIP, and in some states extends to adults, not only children.
  • The source file has no United States total row; none is computed here.
  • A note on an observation quotes the source's own footnote for that figure, such as retroactive enrollments or a non-point-in-time count.

State comparison:

Organization
Centers for Medicare and Medicaid Services
Dataset
Medicaid and CHIP enrollment, share of population (computed by Understand Idaho)
Geography
States and the District of Columbia
Time coverage
2013-09 to 2026-05
Update frequency
Monthly
Published
Newest release as of
; next expected by December 2026
Original file
https://download.medicaid.gov/data/pi-dataset-august-2026-release.csv
License
Public domain. U.S. federal government work.
Our copy
Medicaid and CHIP enrollment, share of population (computed by Understand Idaho)

Caveats

  • Computed by Understand Idaho from Medicaid and CHIP Enrollment Data and Population Estimates Program; it is not a figure the publisher releases.
  • Totals for 2010-2019 are Vintage 2019 estimates and 2020-2025 are Vintage 2025; a change across 2019 to 2020 includes the revision between vintages.

Where sources disagree

  • Population, Idaho, 2020: U.S. Census Bureau, 2020 Census apportionment counts publishes 1,839,106. The Population Estimates base for April 1, 2020 is 1,839,123, 17 more than the 1,839,106 apportionment count. The 2020 to 2025 estimates build forward from that base.

Inputs: Medicaid and CHIP Enrollment Data and Population Estimates Program.

Cite as Understand Idaho, “Idaho Medicaid enrollment”, https://understandidaho.com/health/medicaid/; cite the publisher above for the figures. See the data catalog.

This page was last updated .