Prevention
Mammography Screening (Women 50-74) by County — US Rankings
CDC PLACES 2022 · Age-adjusted prevalence · 3,143/3,144 reporting counties (100% coverage)
Mammography uptake is reported among women aged 50-74 with a screening mammogram in the past two years, per the USPSTF guideline window that PLACES uses. The measure is highly sensitive to insurance status, primary-care engagement, and the local availability of screening facilities — particularly in rural counties where the nearest mammography center can be more than 30 miles away. National screening rates have plateaued for several years; the county-level variance is wide.
How this ranking is built
Source: CDC PLACES 2022 measure year. Methodology: BRFSS survey responses pooled across years, fitted with a small-area statistical model, age-adjusted to the 2000 US standard population. Confidence intervals (95%) are shown for each county — wider intervals indicate more uncertainty in the modeled estimate, typically driven by smaller populations.
Highest Mammography (women 50-74) Rates — Top 100 Counties
Counties with the highest reported mammography (women 50-74) rates — these counties lead the nation on this measure.
Best 100 counties for Mammography (women 50-74).
Lowest Mammography (women 50-74) Rates — Bottom 100 CountiesCounties with the lowest reported mammography (women 50-74) rates.
Worst 100 counties for Mammography (women 50-74).
What this ranking suggests
Mammography rates are a clean test of whether a county's primary-care system reaches its women in the recommended age window. Pair this ranking with the local hospital list on the county page — facility access drives a real share of the variance.
Methodology notes & limitations
Estimates are statistical model outputs, not direct measurements. Small counties have wider confidence intervals; treat narrow rank differences in those rows as within-noise. Exact observed/total coverage is reported above. Rows without a reported estimate are excluded for this measure. An absent value may reflect source availability or suppression; the checked-in artifact does not attribute every missing value to one cause. All measures are age-adjusted to the 2000 US standard population. The PLACES dataset uses BRFSS self-reported data — self-report introduces known direction-of-bias in some measures (BMI is under-reported; binge drinking is under-reported), but the bias is roughly uniform across counties so ranking comparability is preserved. See the methodology page for full data-pipeline documentation.
By HealthByCounty Editorial Team
Page revised
Data source: CDC PLACES 2022 measure year. Measure ID: MAMMOUSE.