Missing Millions · 2026 estimate

Missouri is missing 267,700 lung cancer screenings.

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

331,300adults qualify for screening under USPSTF 2021 criteria (estimate)
19.2%were screened, 21st of 51 (American Lung Association, 2025); 18.2% nationally
11,922low-dose CT screening scans billed to Medicare fee-for-service by Missouri 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.

St. Louis County

35,900

missing lung cancer screenings (estimate)

  • Qualify for screening44,500
  • Adults 50 to 80 missing screening1 in 9
  • Medicare low-dose CT scans, 20241,889
Open the St. Louis County page

Every Missouri county, ranked

Ranked by estimated missing screenings. Select a column to sort.
1St. Louis County35,90044,5001 in 91,889
2Jackson County28,20034,9001 in 81,589
3St. Charles County13,90017,2001 in 10264
4Greene County11,80014,6001 in 8608
5St. Louis city11,10013,7001 in 82,775
6Jefferson County10,90013,5001 in 8295
7Clay County9,30011,5001 in 9512
8Jasper County5,7007,0001 in 70
9Franklin County5,2006,5001 in 835
10Boone County5,0006,2001 in 10438
11Cass County4,7005,9001 in 80
12Buchanan County4,1005,1001 in 7141
13St. Francois County3,8004,7001 in 6182
14Christian County3,7004,5001 in 80
15Platte County3,5004,4001 in 100
16Cape Girardeau County3,1003,9001 in 81,654
17Newton County3,0003,7001 in 7359
18Lincoln County3,0003,7001 in 70
19Cole County3,0003,7001 in 9334
20Taney County2,8003,5001 in 7174
21Camden County2,8003,4001 in 8329
22Butler County2,5003,1001 in 614
23Howell County2,5003,1001 in 6125
24Stone County2,2002,7001 in 70
25Barry County2,2002,7001 in 60
26Laclede County2,2002,7001 in 60
27Lawrence County2,1002,6001 in 60
28Webster County2,1002,6001 in 60
29Callaway County2,1002,6001 in 80
30Pettis County2,0002,5001 in 739
31Scott County2,0002,5001 in 70
32Warren County1,9002,4001 in 70
33Johnson County1,8002,2001 in 80
34Phelps County1,8002,2001 in 80
35Stoddard County1,7002,1001 in 60
36Polk County1,7002,1001 in 719
37Dunklin County1,7002,0001 in 50
38Texas County1,6002,0001 in 60
39Washington County1,6002,0001 in 50
40Lafayette County1,6001,9001 in 80
41Morgan County1,5001,9001 in 60
42Benton County1,5001,9001 in 60
43McDonald County1,5001,8001 in 50
44Crawford County1,4001,8001 in 60
45Miller County1,4001,7001 in 70
46Pulaski County1,4001,7001 in 80
47Henry County1,4001,7001 in 684
48Marion County1,3001,7001 in 752
49Audrain County1,3001,6001 in 60
50Randolph County1,3001,6001 in 60
51Ray County1,3001,6001 in 70
52Wright County1,2001,5001 in 50
53Dallas County1,1001,4001 in 60
54Vernon County1,1001,4001 in 60
55Clinton County1,1001,3001 in 70
56Pike County1,0001,2001 in 60
57Ste. Genevieve County9901,2001 in 70
58Perry County9801,2001 in 70
59Bates County9601,2001 in 60
60Saline County9501,2001 in 80
61Pemiscot County9401,2001 in 511
62New Madrid County9401,2001 in 60
63Cedar County9001,1001 in 60
64Dent County9001,1001 in 60
65Wayne County8601,1001 in 50
66Gasconade County8401,0001 in 70
67Mississippi County8101,0001 in 50
68Andrew County8101,0001 in 80
69Cooper County8009801 in 80
70Adair County7809601 in 90
71Hickory County7709501 in 50
72Macon County7609401 in 70
73Douglas County7409201 in 60
74Ozark County7409101 in 50
75Barton County7309101 in 60
76Livingston County7309101 in 70
77Madison County7209001 in 60
78Moniteau County7108801 in 70
79Ripley County6908601 in 50
80Montgomery County6908601 in 60
81Nodaway County6708301 in 90
82St. Clair County6608201 in 60
83Bollinger County6608101 in 60
84Ralls County6608101 in 70
85Linn County6407901 in 70
86Osage County6107601 in 80
87Oregon County6107501 in 50
88Iron County5907401 in 60
89Monroe County5506801 in 60
90Dade County5206401 in 60
91Grundy County5106301 in 60
92Lewis County5006201 in 70
93Maries County5006101 in 70
94DeKalb County4906101 in 70
95Caldwell County4806001 in 70
96Daviess County4805901 in 60
97Harrison County4705801 in 60
98Shannon County4705801 in 60
99Carroll County4705801 in 70
100Howard County4405401 in 80
101Reynolds County4305301 in 60
102Clark County4105001 in 60
103Chariton County4005001 in 70
104Carter County3704601 in 60
105Shelby County3404201 in 60
106Gentry County3204001 in 60
107Sullivan County3203901 in 70
108Atchison County2903601 in 70
109Putnam County2402901 in 70
110Holt County2302901 in 70
111Knox County2302901 in 60
112Scotland County2202701 in 70
113Mercer County2002501 in 60
114Schuyler County2002401 in 70
115Worth County1201501 in 60

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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