Missing Millions · 2026 estimate

Iowa is missing 124,500 lung cancer screenings.

About 1 in 8 adults ages 50 to 80 in Iowa qualifies for lung cancer screening and hasn't been screened. Find your county below.

152,600adults qualify for screening under USPSTF 2021 criteria (estimate)
18.4%were screened, 26th of 51 (American Lung Association, 2025); 18.2% nationally
6,765low-dose CT screening scans billed to Medicare fee-for-service by Iowa providers in 2024

Sources: U.S. Census Bureau Population Estimates 2025; CDC PLACES 2025; USPSTF 2021; American Lung Association, State of Lung Cancer 2025; CMS Medicare Physician and Other Practitioners 2024 (CPT 71271). Modeled estimates; see methodology below.

The gap, county by county

Shade shows how many adults ages 50 to 80 are missing screening. Select a county.

Polk County

16,200

missing lung cancer screenings (estimate)

  • Qualify for screening19,900
  • Adults 50 to 80 missing screening1 in 9
  • Medicare low-dose CT scans, 20241,803
Open the Polk County page

Every Iowa county, ranked

Ranked by estimated missing screenings. Select a column to sort.
1Polk County16,20019,9001 in 91,803
2Linn County8,1009,9001 in 91,245
3Scott County6,6008,1001 in 9532
4Black Hawk County5,0006,2001 in 8306
5Pottawattamie County4,4005,4001 in 7121
6Woodbury County4,1005,1001 in 8119
7Dubuque County3,6004,5001 in 9305
8Johnson County3,6004,5001 in 11901
9Dallas County2,8003,5001 in 11195
10Clinton County2,3002,8001 in 70
11Story County2,1002,6001 in 11539
12Cerro Gordo County2,0002,5001 in 8491
13Muscatine County1,9002,3001 in 80
14Warren County1,9002,3001 in 1074
15Jasper County1,8002,2001 in 80
16Des Moines County1,8002,2001 in 828
17Lee County1,7002,1001 in 70
18Wapello County1,7002,1001 in 70
19Marshall County1,6002,0001 in 80
20Webster County1,6001,9001 in 80
21Marion County1,3001,5001 in 90
22Benton County1,2001,4001 in 80
23Boone County1,1001,4001 in 90
24Plymouth County1,0001,3001 in 90
25Sioux County1,0001,3001 in 100
26Jones County1,0001,3001 in 80
27Jackson County1,0001,2001 in 80
28Fayette County9701,2001 in 70
29Clayton County9701,2001 in 70
30Mahaska County9701,2001 in 80
31Washington County9401,2001 in 80
32Carroll County9001,1001 in 80
33Henry County9001,1001 in 876
34Buchanan County8801,1001 in 80
35Delaware County8801,1001 in 80
36Bremer County8801,1001 in 90
37Tama County8501,0001 in 70
38Cedar County8501,0001 in 80
39Dickinson County8201,0001 in 90
40Hardin County8009801 in 80
41Page County8009801 in 70
42Buena Vista County7809601 in 80
43Poweshiek County7609401 in 80
44Winneshiek County7509201 in 1030
45Appanoose County7509201 in 60
46Iowa County7308901 in 80
47Floyd County7308901 in 80
48Clay County7208801 in 80
49Crawford County7108701 in 70
50Jefferson County7108701 in 90
51Harrison County7008601 in 80
52Madison County7008601 in 90
53Allamakee County6908501 in 80
54Cass County6908501 in 70
55Butler County6908401 in 80
56Kossuth County6608101 in 80
57Hamilton County6307801 in 80
58Mills County6207601 in 90
59O'Brien County6107501 in 80
60Cherokee County5606901 in 80
61Chickasaw County5506801 in 80
62Wright County5506801 in 80
63Shelby County5506701 in 80
64Union County5306501 in 80
65Keokuk County5206301 in 70
66Guthrie County5206301 in 80
67Montgomery County5106201 in 80
68Hancock County5006101 in 80
69Clarke County5006101 in 70
70Louisa County4906001 in 80
71Grundy County4906001 in 90
72Lyon County4906001 in 80
73Franklin County4705801 in 70
74Lucas County4705801 in 70
75Mitchell County4705801 in 80
76Humboldt County4505501 in 70
77Sac County4505501 in 80
78Greene County4505501 in 80
79Howard County4505501 in 70
80Calhoun County4405501 in 80
81Winnebago County4305301 in 90
82Monona County4305201 in 80
83Emmet County4205201 in 80
84Davis County4105001 in 70
85Van Buren County4004901 in 70
86Palo Alto County3904701 in 80
87Adair County3604401 in 70
88Worth County3404201 in 80
89Monroe County3404201 in 80
90Pocahontas County3404101 in 80
91Decatur County3203901 in 80
92Fremont County3203901 in 80
93Ida County3103801 in 80
94Wayne County3103801 in 70
95Osceola County3103801 in 70
96Audubon County2803501 in 80
97Taylor County2803401 in 80
98Ringgold County2102601 in 80
99Adams County1802301 in 80

Methodology

How we estimate the gap

A modeled estimate from public data only. It is not a count of patients and contains no patient information.

missing = adults 50 to 80 × county smoking rate × national eligibility factor × (1 − state screening rate)

  • Adults 50 to 80: U.S. Census Bureau, Population Estimates, Vintage 2025
  • Smoking: CDC PLACES 2025 release (Kentucky and Pennsylvania: 2024 release)
  • Eligibility: USPSTF 2021 criteria, scaled to about 14.5 million eligible adults nationally
  • Screening rates: American Lung Association, State of Lung Cancer 2025
  • Who is missing: Census population estimates (age) and American Community Survey 2020 to 2024 (language)
  • Screening activity: CMS Medicare fee-for-service claims for low-dose CT (CPT 71271), 2024, by provider location

Estimates under 50 are shown as "fewer than 50"; others are rounded. Full methodology

Many of them are already your patients.

Oatmeal Health helps health systems and community health centers find, navigate, and screen the people who qualify, alongside the care teams you already have.

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