States › Maryland
State
Maryland
24 counties or equivalents, 519 places and 462 ZIP Codes with PLACES estimates; 6,180,253 residents.
- Counties
- Largest places
- State figures are site aggregates: population-weighted county estimates, no interval
Maryland has 24 counties or equivalents, 519 places and 462 ZIP Code Tabulation Areas with PLACES estimates, covering 6,180,253 residents (4,818,337 adults).
PLACES does not publish state totals. The state figures here are population-weighted county estimates computed by this site, following CDC's published method for aggregating areas, and carry no interval. For the 2025 release that gives obesity at 35.1% (site aggregate) (age-adjusted 35.0%), above the national interval around 32.8%; county estimates range from 26.1% to 42.2%.
Diagnosed diabetes is 12.5% (site aggregate) by the same method (national 12.0%) and 8.7% (site aggregate) of adults aged 18–64 are estimated to lack health insurance (national 11.0%).
Report card: 40 measures by CDC category
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence is standardised to the 2000 US standard population so that areas with different age structures can be compared. CDC: "Age-adjusted estimates are only available at the county and place-level."
estimate with 95% intervalUS estimate
Health outcomes (12)vs the US interval: 6 above · 5 below · 1 within
Prevention (7)vs the US interval: 5 above · 1 below · 1 within
Health risk behaviors (4)vs the US interval: 1 above · 3 below · 0 within
Disability (7)vs the US interval: 0 above · 7 below · 0 within
Health status (3)vs the US interval: 0 above · 3 below · 0 within
Health-related social needs (7)vs the US interval: 6 above · 0 below · 1 within
State figures are population-weighted county estimates computed by this site and carry no interval, so the dot is a point and the US flag says whether the state figure falls above, below or within CDC's national 95% interval. Each measure links to its national and state tables.
Counties in Maryland
Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag says whether each row's interval lies above, below or in line with the Maryland figure, which is a population-weighted county estimate computed by this site and carries no interval.
| Counties | Population | Estimate | 95% interval | vs the Maryland figure |
|---|---|---|---|---|
| Prince George's County | 947,430 | 42.2% | 38.2–46.3 | above |
| Charles County | 171,973 | 41.9% | 37.5–46.2 | above |
| Dorchester County | 32,879 | 41.8% | 35.9–47.7 | above |
| Caroline County | 33,593 | 41.7% | 36.0–47.7 | above |
| Cecil County | 105,672 | 41.3% | 36.5–46.0 | above |
| Wicomico County | 104,800 | 39.6% | 35.3–44.1 | above |
| Washington County | 155,813 | 39.0% | 35.0–42.9 | in line |
| Baltimore city | 565,239 | 38.7% | 34.6–43.4 | in line |
| Somerset County | 24,910 | 38.4% | 32.2–44.8 | in line |
| Carroll County | 176,639 | 37.7% | 32.4–43.4 | in line |
| St. Mary's County | 115,281 | 37.4% | 33.0–42.2 | in line |
| Allegany County | 67,273 | 36.6% | 31.8–41.2 | in line |
| Calvert County | 94,728 | 36.3% | 31.4–41.2 | in line |
| Garrett County | 28,423 | 36.3% | 31.0–42.2 | in line |
| Harford County | 264,644 | 35.8% | 30.7–41.1 | in line |
| Kent County | 19,303 | 35.1% | 29.4–41.5 | in line |
| Frederick County | 293,391 | 34.7% | 31.0–38.5 | in line |
| Anne Arundel County | 594,582 | 34.5% | 30.8–38.6 | in line |
| Baltimore County | 844,703 | 34.0% | 30.5–37.5 | in line |
| Worcester County | 54,171 | 33.1% | 27.9–38.4 | in line |
| Talbot County | 37,823 | 30.1% | 25.5–35.2 | in line |
| Howard County | 336,001 | 30.0% | 26.2–34.2 | below |
| Queen Anne's County | 52,508 | 29.4% | 24.9–34.4 | below |
| Montgomery County | 1,058,474 | 26.1% | 23.2–29.3 | below |
Largest places in Maryland
- Baltimore 585,708
- Columbia 104,681
- Germantown 91,249
- Waldorf 81,410
- Silver Spring 81,015
- Frederick 78,171
- Ellicott City 75,947
- Glen Burnie 72,891
- Gaithersburg 69,657
- Bethesda 68,056
- Dundalk 67,796
- Rockville 67,117
- Towson 59,553
- Bowie 58,329
- Bel Air South 57,648
- Severn 57,118
- Wheaton 52,150
- Aspen Hill 51,063
- North Bethesda 50,094
- Potomac 47,018
- Catonsville 44,701
- Hagerstown 43,527
- Odenton 42,947
- Annapolis 40,812
- Essex 40,505
The 25 most populous places; every county page lists all of its places and ZIP Codes.
Measures
State figures are population-weighted county estimates computed by this site and carry no interval; the word says whether each falls above, below or within CDC's national interval.
Health outcomes
- All Teeth Lost 9.9% (site aggregate) · US 12.2% · below US interval
- Arthritis 25.8% (site aggregate) · US 25.4% · above US interval
- Cancer (non-skin) or Melanoma 7.6% (site aggregate) · US 7.9% · below US interval
- COPD 5.9% (site aggregate) · US 6.2% · below US interval
- Coronary Heart Disease 5.8% (site aggregate) · US 6.4% · below US interval
- Current Asthma 10.6% (site aggregate) · US 9.8% · above US interval
- Depression 19.4% (site aggregate) · US 20.2% · below US interval
- Diabetes 12.5% (site aggregate) · US 12.0% · above US interval
- High Blood Pressure 36.8% (site aggregate) · US 34.4% · above US interval
- High Cholesterol 38.1% (site aggregate) · US 37.4% · above US interval
- Obesity 35.1% (site aggregate) · US 32.8% · above US interval
- Stroke 3.4% (site aggregate) · US 3.4% · within US interval
Prevention
- Cholesterol Screening 89.6% (site aggregate) · US 87.5% · above US interval
- Colorectal Cancer Screening 68.2% (site aggregate) · US 66.3% · above US interval
- Health Insurance 8.7% (site aggregate) · US 11.0% · below US interval
- Mammography 80.7% (site aggregate) · US 76.5% · above US interval
- High Blood Pressure Medication 76.6% (site aggregate) · US 77.0% · within US interval
- Dental Visit 64.4% (site aggregate) · US 63.9% · above US interval
- Annual Checkup 79.2% (site aggregate) · US 77.7% · above US interval
Health risk behaviors
- Binge Drinking 14.1% (site aggregate) · US 15.2% · below US interval
- Current Cigarette Smoking 10.9% (site aggregate) · US 11.4% · below US interval
- Physical Inactivity 23.6% (site aggregate) · US 24.5% · below US interval
- Short Sleep Duration 37.7% (site aggregate) · US 36.0% · above US interval
Disability
- Any Disability 26.4% (site aggregate) · US 30.0% · below US interval
- Cognitive Disability 12.2% (site aggregate) · US 13.7% · below US interval
- Hearing Disability 5.6% (site aggregate) · US 6.7% · below US interval
- Independent Living Disability 7.0% (site aggregate) · US 7.9% · below US interval
- Mobility Disability 12.4% (site aggregate) · US 13.5% · below US interval
- Self-care Disability 3.5% (site aggregate) · US 3.8% · below US interval
- Vision Disability 4.5% (site aggregate) · US 5.5% · below US interval
Health status
- General Health 17.9% (site aggregate) · US 19.2% · below US interval
- Frequent Mental Distress 15.0% (site aggregate) · US 15.6% · below US interval
- Frequent Physical Distress 12.0% (site aggregate) · US 12.8% · below US interval
Health-related social needs
- Food Insecurity 15.4% (site aggregate) · US 14.7% · above US interval
- Housing Insecurity 13.5% (site aggregate) · US 11.7% · above US interval
- Transportation Barriers 7.8% (site aggregate) · US 7.7% · within US interval
- Lack of Social/Emotional Support 24.2% (site aggregate) · US 23.3% · above US interval
- Loneliness 34.3% (site aggregate) · US 32.0% · above US interval
- Food Stamps 11.8% (site aggregate) · US 11.2% · above US interval
- Utility Services Threat 8.4% (site aggregate) · US 7.4% · above US interval
Questions and answers
How is the Maryland figure calculated?
PLACES publishes county, place, tract and ZCTA estimates but no state row. Following CDC's guidance for aggregating areas, this site multiplies each county's estimate by its adult population, sums across the state's 24 counties and divides by the total adult population. The result has no published confidence interval, so county pages describe their position against it as above, below or in line with the state figure.
Which Maryland counties have the highest obesity estimates?
The county table on this page can be sorted by any of the 40 measures. Estimates are listed with their 95% confidence intervals; adjacent counties often have overlapping intervals and cannot be told apart, so the order is by point estimate only and is not a ranking of health.
What is the difference between crude and age-adjusted figures?
Crude prevalence is the estimated share of all adults. Age-adjusted prevalence re-weights the estimate to the 2000 US standard population so areas with different age structures can be compared; CDC publishes age-adjusted figures for counties and places only. The toggle on this page switches between them.
Where does this data come from?
CDC PLACES: Local Data for Better Health, 2025 release, data updated 4 Dec 2025; the state figure for obesity is 35.1% (site aggregate) in the 2025 release.
Provenance
Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), with the 2022, 2023, 2024 releases for reference; US government work, public domain. Boundaries and ZIP-to-county relationships: US Census Bureau. Percentages are shown to one decimal as CDC publishes them; state figures are population-weighted means computed by this site. The Maryland figure for each measure is the sum over counties of estimate × adult population, divided by the state's adult population, per CDC's guidance for aggregating areas; measures defined on a subgroup (women 50–74, adults 18–64, adults 65 and over) are weighted by total adult population as an approximation. Processing errors are corrected at the next daily build; see corrections. Generated 30 Sep 2026.