Skip to content
Understand Idaho

Idaho Medicaid enrollment

310,400

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

−2.6% since May 2025 (318,814); −21.7% since May 2021 (396,646)

Source: Centers for Medicare and Medicaid Services, State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data. Data period May 2026. Status: preliminary. Published .

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

Change and comparison

The series high is 460,085 in March 2023 and the low is 238,150 in September 2013.

Among 50 states and the District of Columbia, Idaho ranked 41st highest in May 2026. California was highest at 11,762,641 and Wyoming lowest at 59,917.

Among Idaho and its 6 neighboring states, Idaho ranks 5th highest; Utah is next above at 324,460 and Montana next below at 202,904.

Historical data

Idaho Medicaid enrollment, 2013-09 to 2026-05Idaho Medicaid enrollment, 2013-09 to 2026-05. 3 series. Idaho: 238,150 in September 2013, 310,400 in May 2026.0200k400k600k201520202025IdahoMedicaidenrollmentCHIPenrollmentPeopleIdaho Medicaid enrollment, 2013-09 to 2026-05Idaho Medicaid enrollment, 2013-09 to 2026-05. 3 series. Idaho: 238,150 in September 2013, 310,400 in May 2026.0200k400k600k201520202025IdahoMedicaidenrollmentCHIPenrollmentPeopleIdaho Medicaid enrollment, 2013-09 to 2026-05Idaho Medicaid enrollment, 2013-09 to 2026-05. 3 series. Idaho: 238,150 in September 2013, 310,400 in May 2026.0200k400k600k201520202025IdahoMedicaidenrollmentCHIP enrollmentPeople

Source: Centers for Medicare and Medicaid Services, State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data. Published .

Data table (109 rows)
PeriodIdaho (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 2026310,400290,94419,456

Compared with other states

  1. California11,762,641
  2. New York6,386,205
  3. Texas3,941,123
  4. Washington1,786,049
  5. Oregon1,271,996
  6. Nevada714,071
  7. Utah324,460
  8. Idaho310,400
  9. Montana202,904
  10. South Dakota138,641
  11. North Dakota103,256
  12. Wyoming59,917

Source: Centers for Medicare and Medicaid Services, State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data. Data period 2026-05. Published .

The first 10 of 51 rows; the full table is below.

StateMay 2026
1. California11,762,641
2. New York6,386,205
3. Texas3,941,123
4. Florida3,577,801
5. Pennsylvania2,963,790
6. Illinois2,939,165
7. North Carolina2,820,258
8. Ohio2,620,167
9. Michigan2,150,220
10. Georgia1,826,428
Data table (51 rows)
StateMay 2026
1. California11,762,641
2. New York6,386,205
3. Texas3,941,123
4. Florida3,577,801
5. Pennsylvania2,963,790
6. Illinois2,939,165
7. North Carolina2,820,258
8. Ohio2,620,167
9. Michigan2,150,220
10. Georgia1,826,428
11. Washington1,786,049
12. New Jersey1,748,840
13. Virginia1,644,308
14. Arizona1,621,802
15. Massachusetts1,535,921
16. Tennessee1,387,037
17. Indiana1,378,365
18. Maryland1,373,772
19. Louisiana1,275,658
20. Kentucky1,272,217
21. Oregon1,271,996
22. Missouri1,243,830
23. Colorado1,188,091
24. Minnesota1,131,743
25. Wisconsin1,108,942
26. Oklahoma991,558
27. South Carolina957,737
28. Alabama933,487
29. Connecticut897,214
30. Arkansas787,684
31. Nevada714,071
32. Iowa674,796
33. New Mexico674,273
34. Mississippi584,206
35. West Virginia486,392
36. Kansas395,191
37. Hawaii392,022
38. Nebraska332,232
39. Maine329,286
40. Utah324,460
41. Idaho310,400
42. Rhode Island285,146
43. District of Columbia238,011
44. Delaware235,322
45. Alaska207,612
46. Montana202,904
47. New Hampshire168,682
48. Vermont145,403
49. South Dakota138,641
50. North Dakota103,256
51. Wyoming59,917
  • Ohio, West Virginia: Includes Individuals Enrolled At Any Time in Month (Not a Point-in-Time Count)
  • Hawaii, New Hampshire: Includes Retroactive Enrollments
  • Montana: Includes Individuals Enrolled At Any Time in Month (Not a Point-in-Time Count); Includes Limited-Benefit Enrollees; Includes Retroactive Enrollments

Source

Organization
Centers for Medicare and Medicaid Services
Dataset
State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data
Geography
States and the District of Columbia
Time coverage
2013-09 to 2026-05
Update frequency
Monthly
Published
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
State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data, built by scripts/fetch-cms-medicaid-chip-enrollment.py

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.

Cite

Cite this page as Understand Idaho, “Idaho Medicaid enrollment”, https://understandidaho.com/health/medicaid/, retrieved on the date you read it, and the publisher named above for the figures themselves. The dataset behind it is described in the data catalog.

This page was last updated .