St. Mary's County, MD health estimates
Maryland. 115,281 residents, 87,752 adults (the Census population estimates that PLACES uses). 26 ZIP Codes and 11 places with estimates.
Open the watch listCompare with another placeZIP Codes of the county (CSV)
The figures are model-based estimates for the adults of an area. They are not measurements. They say nothing about one person.
We do not produce estimates for individuals; only aggregated results for counties, places, census tracts, or ZCTAs.
First, it is not adequate to simply compare point estimates. The confidence intervals should also be considered, and some are very broad.
Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)
PLACES 2025 release. Survey years (BRFSS): 2022 and 2023. CDC updated the data on . What an estimate is. How to read an interval. The site gives no medical advice.
CDC estimates that 37.4% of the adults of St. Mary's County, MD have obesity.
The 95% confidence interval is 33.0% to 42.2%.
PLACES 2025, BRFSS 2023.
Report card: 40 measures by CDC category
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence uses the 2000 US standard population, so that areas with different ages can be compared. CDC: Age-adjusted estimates are only available at the county and place-level.
- 95% confidence interval
- estimate
- Maryland figure (site aggregate), no interval
- US estimate
"Higher" or "lower": the two 95% confidence intervals do not overlap. "Similar": they overlap. Against the state figure, which has no interval, the words are "above", "below" and "in line".
- Health outcomes (12)
- Prevention (7)
- Health risk behaviors (4)
- Disability (7)
- Health status (3)
- Health-related social needs (7)
| Measure | Estimate and interval on a scale of 0 to 50% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| All teeth lost among adults aged ≥65 yearsBRFSS 2022 | 8.0% | 6.6 to 9.6 | 9.9%below | 12.2%lowerinterval 11.8 to 12.6 | 8.4% | 6.9 to 10.1 | 10.1%in line | 12.6%lowerinterval 12.2 to 13.0 | ||
| Arthritis among adultsBRFSS 2023 | 27.3% | 24.9 to 30.0 | 25.8%in line | 25.4%similar | 25.1% | 22.9 to 27.6 | 22.6%above | 21.9%higherinterval 21.6 to 22.1 | ||
| Cancer (non-skin) or melanoma among adultsBRFSS 2023 | 8.0% | 7.2 to 8.8 | 7.6%in line | 7.9%similar | 7.3% | 6.6 to 8.0 | 6.4%above | 6.6%similar | ||
| Chronic obstructive pulmonary disease among adultsBRFSS 2023 | 5.9% | 4.9 to 7.0 | 5.9%in line | 6.2%similar | 5.4% | 4.5 to 6.4 | 5.2%in line | 5.3%similar | ||
| Coronary heart disease among adultsBRFSS 2023 | 5.7% | 4.9 to 6.4 | 5.8%in line | 6.4%similar | 5.1% | 4.5 to 5.8 | 4.9%in line | 5.3%similar | ||
| Current asthma among adultsBRFSS 2023 | 10.7% | 9.6 to 12.0 | 10.6%in line | 9.8%similar | 10.7% | 9.6 to 11.9 | 10.6%in line | 9.8%similar | ||
| Depression among adultsBRFSS 2023 | 21.2% | 18.7 to 24.0 | 19.4%in line | 20.2%similar | 21.5% | 19.0 to 24.4 | 20.0%in line | 20.7%similar | ||
| Diagnosed diabetes among adultsBRFSS 2023 | 11.4% | 10.0 to 13.1 | 12.5%in line | 12.0%similar | 10.3% | 9.1 to 11.8 | 10.9%in line | 10.3%similar | ||
| High blood pressure among adultsBRFSS 2023 | 34.7% | 31.8 to 37.8 | 36.8%in line | 34.4%similar | 32.6% | 29.7 to 35.6 | 33.4%in line | 30.7%similar | ||
| High cholesterol among adults who have ever been screenedBRFSS 2023 | 37.2% | 34.2 to 40.4 | 38.1%in line | 37.4%similar | 33.8% | 30.9 to 36.9 | 33.8%in line | 32.2%similar | ||
| Obesity among adultsBRFSS 2023 | 37.4% | 33.0 to 42.2 | 35.1%in line | 32.8%similar | 37.2% | 32.9 to 42.0 | 35.0%in line | 32.9%similar | ||
| Stroke among adultsBRFSS 2023 | 3.0% | 2.6 to 3.3 | 3.4%below | 3.4%similar | 2.7% | 2.4 to 3.0 | 2.9%in line | 2.9%similar |
| Measure | Estimate and interval on a scale of 0 to 100% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cholesterol screening among adultsBRFSS 2023 | 88.6% | 86.8 to 90.4 | 89.6%in line | 87.5%similar | 87.8% | 85.8 to 89.7 | 88.4%in line | 85.6%similar | ||
| Colorectal cancer screening among adults aged 45–75 yearsBRFSS 2022 | 70.2% | 66.5 to 73.8 | 68.2%in line | 66.3%similar | 66.6% | 62.8 to 70.4 | 63.6%in line | 54.1%higherinterval 53.7 to 54.6 | ||
| Current lack of health insurance among adults aged 18-64 yearsBRFSS 2023 | 7.6% | 6.1 to 9.4 | 8.7%in line | 11.0%lowerinterval 10.7 to 11.3 | 7.9% | 6.2 to 9.8 | 9.1%in line | 11.5%lowerinterval 11.2 to 11.9 | ||
| Mammography use among women aged 50-74 yearsBRFSS 2022 | 77.5% | 72.3 to 82.4 | 80.7%in line | 76.5%similar | 77.4% | 72.1 to 82.2 | 80.3%in line | 76.0%similar | ||
| Taking medicine to control high blood pressure among adults with high blood pressureBRFSS 2023 | 76.0% | 73.3 to 78.4 | 76.6%in line | 77.0%similar | 59.0% | 55.3 to 62.6 | 58.5%in line | 57.5%similar | ||
| Visited dentist or dental clinic in the past year among adultsBRFSS 2022 | 64.2% | 61.4 to 66.9 | 64.4%in line | 63.9%similar | 64.3% | 61.5 to 67.0 | 63.9%in line | 63.4%similar | ||
| Visits to doctor for routine checkup within the past year among adultsBRFSS 2023 | 77.5% | 74.7 to 80.3 | 79.2%in line | 77.7%similar | 76.5% | 73.5 to 79.3 | 77.5%in line | 75.7%similar |
| Measure | Estimate and interval on a scale of 0 to 50% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Binge drinking among adultsBRFSS 2023 | 16.9% | 14.5 to 19.4 | 14.1%above | 15.2%similar | 17.7% | 15.2 to 20.2 | 15.3%in line | 16.6%similar | ||
| Current cigarette smoking among adultsBRFSS 2023 | 12.7% | 10.2 to 15.3 | 10.9%in line | 11.4%similar | 12.7% | 10.2 to 15.3 | 11.0%in line | 11.6%similar | ||
| No leisure-time physical activity among adultsBRFSS 2023 | 22.7% | 19.1 to 26.4 | 23.6%in line | 24.5%similar | 22.3% | 18.8 to 26.1 | 22.8%in line | 23.7%similar | ||
| Short sleep duration among adultsBRFSS 2022 | 37.5% | 33.7 to 41.5 | 37.7%in line | 36.0%similar | 37.7% | 33.9 to 41.6 | 38.4%in line | 36.8%similar |
| Measure | Estimate and interval on a scale of 0 to 40% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Any disability among adultsBRFSS 2023 | 25.9% | 22.4 to 29.7 | 26.4%in line | 30.0%similar | 25.3% | 22.0 to 29.0 | 25.3%in line | 28.3%similar | ||
| Cognitive disability among adultsBRFSS 2023 | 12.9% | 11.0 to 15.0 | 12.2%in line | 13.7%similar | 13.1% | 11.2 to 15.3 | 12.7%in line | 14.1%similar | ||
| Hearing disability among adultsBRFSS 2023 | 5.7% | 5.0 to 6.5 | 5.6%in line | 6.7%lowerinterval 6.6 to 6.9 | 5.4% | 4.7 to 6.2 | 4.9%in line | 5.8%similar | ||
| Independent living disability among adultsBRFSS 2023 | 6.6% | 5.6 to 7.7 | 7.0%in line | 7.9%similar | 6.6% | 5.6 to 7.7 | 6.8%in line | 7.6%similar | ||
| Mobility disability among adultsBRFSS 2023 | 11.4% | 9.6 to 13.4 | 12.4%in line | 13.5%similar | 10.5% | 8.8 to 12.3 | 10.9%in line | 11.7%similar | ||
| Self-care disability among adultsBRFSS 2023 | 3.0% | 2.6 to 3.6 | 3.5%in line | 3.8%similar | 2.9% | 2.4 to 3.3 | 3.2%in line | 3.4%similar | ||
| Vision disability among adultsBRFSS 2023 | 3.9% | 3.4 to 4.4 | 4.5%below | 5.5%lowerinterval 5.4 to 5.7 | 3.8% | 3.2 to 4.3 | 4.3%in line | 5.2%lowerinterval 5.1 to 5.4 |
| Measure | Estimate and interval on a scale of 0 to 30% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Fair or poor self-rated health status among adultsBRFSS 2023 | 17.1% | 14.5 to 19.9 | 17.9%in line | 19.2%similar | 16.6% | 14.2 to 19.3 | 17.1%in line | 18.3%similar | ||
| Frequent mental distress among adultsBRFSS 2023 | 16.4% | 14.4 to 18.5 | 15.0%in line | 15.6%similar | 16.9% | 14.8 to 19.0 | 15.7%in line | 16.3%similar | ||
| Frequent physical distress among adultsBRFSS 2023 | 11.9% | 10.3 to 13.7 | 12.0%in line | 12.8%similar | 11.5% | 9.9 to 13.2 | 11.3%in line | 12.1%similar |
| Measure | Estimate and interval on a scale of 0 to 50% | Estimate | 95% interval | MD figure (site aggregate) | United States | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Food insecurity in the past 12 months among adultsBRFSS 2023 | 12.1% | 10.0 to 14.7 | 15.4%below | 14.7%similar | 12.3% | 10.1 to 15.0 | 15.9%below | 15.6%lowerinterval 15.2 to 15.9 | ||
| Housing insecurity in the past 12 months among adultsBRFSS 2023 | 11.3% | 9.5 to 13.3 | 13.5%below | 11.7%similar | 11.7% | 9.8 to 13.8 | 14.4%below | 12.9%similar | ||
| Lack of reliable transportation in the past 12 months among adultsBRFSS 2023 | 6.8% | 5.8 to 7.9 | 7.8%in line | 7.7%similar | 7.0% | 5.9 to 8.2 | 8.2%in line | 8.3%similar | ||
| Lack of social and emotional support among adultsBRFSS 2023 | 23.5% | 20.4 to 27.0 | 24.2%in line | 23.3%similar | 23.8% | 20.6 to 27.2 | 24.7%in line | 24.1%similar | ||
| Loneliness among adultsBRFSS 2023 | 35.6% | 31.7 to 39.9 | 34.3%in line | 32.0%similar | 36.3% | 32.1 to 40.6 | 35.2%in line | 33.2%similar | ||
| Received food stamps in the past 12 months among adultsBRFSS 2023 | 9.8% | 7.9 to 12.2 | 11.8%in line | 11.2%similar | 10.0% | 8.0 to 12.3 | 12.2%in line | 11.8%similar | ||
| Utility services shut-off threat in the past 12 months among adultsBRFSS 2023 | 7.0% | 6.0 to 8.2 | 8.4%below | 7.4%similar | 7.3% | 6.2 to 8.5 | 8.9%below | 8.1%similar |
ZIP Codes in St. Mary's County
| ZIP Code | Residents | Estimate | 95% confidence interval | Against St. Mary's County |
|---|---|---|---|---|
| ZIP Code 20606 | 251 | 39.0% | 34.1 to 43.8 | similar |
| ZIP Code 20609 | 1,076 | 36.6% | 31.8 to 41.1 | similar |
| ZIP Code 20618 | 1,073 | 37.9% | 33.4 to 42.7 | similar |
| ZIP Code 20619 | 14,179 | 36.1% | 31.9 to 40.7 | similar |
| ZIP Code 20620 | 1,588 | 36.4% | 31.9 to 40.8 | similar |
| ZIP Code 20621 | 1,214 | 38.3% | 33.6 to 42.9 | similar |
| ZIP Code 20624 | 1,138 | 36.2% | 31.8 to 40.8 | similar |
| ZIP Code 20626 | 403 | 36.9% | 32.3 to 41.6 | similar |
| ZIP Code 20628 | 599 | 38.3% | 33.6 to 42.9 | similar |
| ZIP Code 20630 | 586 | 36.2% | 31.7 to 40.8 | similar |
| ZIP Code 20634 | 6,984 | 39.2% | 34.5 to 43.7 | similar |
| ZIP Code 20636 | 10,615 | 36.9% | 32.3 to 41.2 | similar |
| ZIP Code 20650 | 15,298 | 35.2% | 30.7 to 39.5 | similar |
| ZIP Code 20653 | 25,180 | 40.1% | 35.6 to 44.8 | similar |
| ZIP Code 20656 | 106 | 41.6% | 36.6 to 46.6 | similar |
| ZIP Code 20659 | 24,427 | 37.5% | 33.1 to 42.1 | similar |
| ZIP Code 20660 | 107 | 41.8% | 36.3 to 47.3 | similar |
| ZIP Code 20667 | 471 | 41.4% | 36.7 to 46.1 | similar |
| ZIP Code 20670 | 1,226 | 30.7% | 26.5 to 35.1 | similar |
| ZIP Code 20674 | 718 | 34.6% | 30.1 to 39.4 | similar |
| ZIP Code 20680 | 944 | 36.6% | 31.9 to 41.3 | similar |
| ZIP Code 20684 | 1,193 | 38.6% | 33.8 to 43.4 | similar |
| ZIP Code 20686 | 977 | 23.3% | 19.0 to 27.8 | lower |
| ZIP Code 20687 | 304 | 38.4% | 33.7 to 43.3 | similar |
| ZIP Code 20690 | 954 | 35.0% | 30.4 to 39.6 | similar |
| ZIP Code 20692 | 738 | 36.6% | 32.2 to 41.3 | similar |
The dashed line in each drawing is St. Mary's County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.
A ZIP Code is in the county that holds the largest share of its land. A ZIP Code that is in two counties shows one time. Download the ZIP Codes of St. Mary's County as a CSV file, with all measures.
Cities and places in St. Mary's County
| Place | Residents | Estimate | 95% confidence interval | Against St. Mary's County |
|---|---|---|---|---|
| California | 12,947 | 37.4% | 33.0 to 41.8 | similar |
| Callaway | 1,779 | 35.9% | 31.5 to 40.3 | similar |
| Charlotte Hall | 1,388 | 35.9% | 31.4 to 40.4 | similar |
| Golden Beach | 3,651 | 36.4% | 31.8 to 41.1 | similar |
| Leonardtown | 4,563 | 35.1% | 30.7 to 39.5 | similar |
| Lexington Park | 13,317 | 40.1% | 35.6 to 44.9 | similar |
| Mechanicsville | 1,673 | 37.7% | 32.8 to 42.4 | similar |
| Piney Point | 980 | 35.0% | 30.5 to 39.7 | similar |
| St. George Island | 265 | 34.3% | 29.7 to 39.3 | similar |
| Tall Timbers | 451 | 34.9% | 30.3 to 39.7 | similar |
| Wildewood | 7,821 | 35.8% | 31.5 to 40.2 | similar |
The dashed line in each drawing is St. Mary's County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.
Estimates in earlier PLACES releases
The current modeling procedure does not support using the estimates to track changes at the local level over time.
Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)
The table lists what each PLACES release published for St. Mary's County, MD, for 12 of the 40 measures.
| Measure | 2022 release | 2023 release | 2024 release | 2025 release |
|---|---|---|---|---|
| COPD | 6.0%5.0 to 7.0 | 5.9%4.8 to 7.1 | 6.6%6.0 to 7.2 | 5.9%4.9 to 7.0 |
| Coronary Heart Disease | 5.9%5.4 to 6.5 | 5.5%4.8 to 6.3 | 6.3%5.7 to 6.9 | 5.7%4.9 to 6.4 |
| Current Asthma | 9.9%9.5 to 10.4 | 10.1%8.9 to 11.3 | 11.0%9.9 to 12.2 | 10.7%9.6 to 12.0 |
| Depression | 16.8%15.8 to 17.8 | 18.4%15.7 to 21.4 | 21.9%19.4 to 24.5 | 21.2%18.7 to 24.0 |
| Diabetes | 10.2%9.5 to 10.9 | 10.6%9.2 to 12.2 | 11.9%10.6 to 13.3 | 11.4%10.0 to 13.1 |
| High Blood Pressure | 34.1%32.9 to 35.3 | 35.1%31.9 to 38.4 | 35.4%32.3 to 38.6 | 34.7%31.8 to 37.8 |
| Obesity | 36.7%35.2 to 38.1 | 35.7%31.2 to 40.4 | 35.5%31.4 to 39.7 | 37.4%33.0 to 42.2 |
| Health Insurance | 10.2%8.5 to 12.1 | 7.7%6.0 to 9.7 | 7.3%6.4 to 8.2 | 7.6%6.1 to 9.4 |
| Binge Drinking | 15.2%14.7 to 15.8 | 16.0%13.6 to 18.7 | 17.5%15.0 to 20.2 | 16.9%14.5 to 19.4 |
| Current Cigarette Smoking | 15.3%12.7 to 18.0 | 14.3%11.5 to 17.5 | 13.3%11.8 to 14.9 | 12.7%10.2 to 15.3 |
| Physical Inactivity | 21.7%19.5 to 24.0 | 21.4%17.9 to 25.2 | 23.0%20.5 to 25.8 | 22.7%19.1 to 26.4 |
| General Health | 11.8%10.3 to 13.5 | 13.4%11.3 to 15.8 | 17.3%15.7 to 18.9 | 17.1%14.5 to 19.9 |
Official sources
- PLACES: Local Data for Better HealthCenters for Disease Control and Prevention. The PLACES project of CDC. Checked .
- PLACES Data PortalCenters for Disease Control and Prevention. CDC page about the data portal and the data sets. Checked .
- PLACES county data, 2025 releaseCenters for Disease Control and Prevention. The data set of CDC for this kind of area. Checked .
- Maryland Department of HealthThe health department of the state. Checked .
The links open the pages of the agencies in a new tab.
Cite this page
Health by ZIP. St. Mary's County, MD: CDC PLACES estimates, 2025 release. Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health. CDC updated the data on 4 Dec 2025. https://healthbyzip.com/county/md/st-mary-s-county/
The address of this page stays the same. CDC's own citation is at the foot of the page.
Where the figures come from
Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release. CDC updated the data on . The page shows the 2022, 2023, 2024 releases as a record. The data are a US government work in the public domain. Data set on data.cdc.gov. The boundaries and the links between ZIP Codes, counties and places come from the US Census Bureau. Percentages have one decimal, as CDC publishes them. A state figure is a site aggregate: the site computes it. The site corrects an error of its own processing at the next build. See corrections.
Questions about St. Mary's County, MD
- How does the obesity estimate of St. Mary's County, MD compare with Maryland?
The Maryland figure is 35.1% (site aggregate).
It has no confidence interval.
The Maryland figure is inside the interval of St. Mary's County, MD. The estimate is in line with it.
- How does the obesity estimate of St. Mary's County, MD compare with the nation?
The US estimate is 32.8%.
The 95% confidence interval is 32.4% to 33.1%.
The two intervals overlap. The estimate for St. Mary's County, MD is similar.
- What does CDC estimate for diagnosed diabetes in St. Mary's County, MD?
CDC estimates that 11.4% of the adults of St. Mary's County, MD have diagnosed diabetes.
The 95% confidence interval is 10.0% to 13.1%.
PLACES 2025, BRFSS 2023.
- For how many measures is St. Mary's County, MD above or below the Maryland figure?
St. Mary's County, MD and the Maryland figure both have a value for 40 measures.
The estimate for St. Mary's County, MD is above the Maryland figure for 1 measure.
It is below the Maryland figure for 6 measures.
It is in line with the Maryland figure for 33 measures.