ZIP code
21795
in Williamsport, MarylandPopulation 10,144
50.62/ 100
Ranked #15,385 of 32,066 US ZIPs (top 48%)
Ranked #384 of 458 Maryland ZIPs (bottom 16%)
Ranked #14 of 28 Hagerstown-Martinsburg, MD-WV ZIPs (top 50%)
Ranks are modeled estimates — ZIPs a few hundred places apart are effectively tied.
What defines this ZIP
Metrics where this ZIP sits in the tails of the national distribution — the ones that most set it apart. Select any tile for its definition and methodology.
Nitrate in drinking water
13.2%
in the top 2.8% nationally
Lower is healthier
ST91stUS97thDefinition & source ›
The modeled share of this area’s domestic-well groundwater at or above the federal nitrate limit of 10 milligrams per liter.
A modeled likelihood for untreated groundwater, the source drawn on by private wells, which are federally unregulated. It is not a measurement of treated water delivered by a public system, and it is not a test of any individual well.
Full methodology ›Radon
3.1 pCi/L
in the top 9.4% nationally
Lower is healthier
ST99thUS91stDefinition & source ›
The modeled typical indoor radon level for this area, in picocuries per liter — the EPA recommends fixing a home at 4 pCi/L or above.
Modeled from indoor-radon measurements. In Alaska and Hawaii, where those measurements are not published, a US Geological Survey geologic radon-potential category stands in — a coarser input, disclosed rather than hidden.
Full methodology ›Loud transportation noise
1.9%
in the top 8.1% nationally
Lower is healthier
ST95thUS92ndDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 65 decibels — around the volume of normal conversation.
Full methodology ›Child-care access
0.51 per 1,000 residents
in the top 10.3% nationally
Higher is healthier
ST93rdUS90thDefinition & source ›
The number of child day-care services inside this ZIP’s boundary, per 1,000 residents.
Counted from establishments located inside this ZIP’s boundary, so one just across the line is not counted. Where a ZIP has too few residents for the density to be reliable, no value is published rather than an unreliable one.
Full methodology ›The read
Williamsport, Maryland (ZIP 21795), overall, ranks in the top 48% healthiest ZIPs nationally (15,385th) and the bottom 16% of Maryland (384th).
This area's most favorable readings come through plainly in the numbers: childcare settles in the top 10.3% nationally, and modeled binge drinking is in the bottom 12.2% nationally. Distance to a nursing home sits at the national minimum, shared with about 27% of ZIPs. Pharmacy lands in the top 13.6% nationally, and civic lies in the top 17% nationally. On the other side, modeled nitrate stands in the top 2.8% nationally, and radon rests in the top 9.4% nationally. Modeled loud transportation noise registers in the top 8.1% nationally. Distance to a hazardous-chemical facility resides at the national minimum, shared with about 31% of ZIPs. Modeled transportation noise settles in the top 16% nationally.
Measured against the nearby ZIPs, park land runs far higher than the surrounding ZIPs on this measure. Defined simply, nitrate is a groundwater compound from fertilizer, manure, and sewage, here a modeled estimate of the chance private-well levels exceed a benchmark. Radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. Distance to a hazardous-chemical facility is a plant handling large amounts of hazardous chemicals that must file an EPA risk-management plan for accidental releases. ZIP 21713, just across the boundary, comes out healthier overall.
What’s driving this score
Nine domains make up the ZipVitals Score — here is how this ZIP does on each, and how much each one counts. Compare it against the US, this state and the Hagerstown-Martinsburg, MD-WV metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Social Need / SDOH
healthier than 71%
16%
Preventive Care
healthier than 74%
13%
Risk Behavior
healthier than 63%
11%
About typical
Mental Health
healthier than 56%
8%
Disability
healthier than 45%
7%
Climate / Disaster Risk
healthier than 45%
5%
Healthcare Access
healthier than 57%
5%
Holding it back
Chronic Disease Burden
healthier than 33%
21%
Environmental Hazard
healthier than 10%
14%
Nothing measured is lifting this score.
About typical
Social Need / SDOH
healthier than 46%
16%
Healthcare Access
healthier than 56%
5%
Holding it back
Chronic Disease Burden
healthier than 19%
21%
Environmental Hazard
healthier than 2%
14%
Preventive Care
healthier than 37%
13%
Risk Behavior
healthier than 38%
11%
Mental Health
healthier than 25%
8%
Disability
healthier than 15%
7%
Climate / Disaster Risk
healthier than 31%
5%
Lifting this score
Social Need / SDOH
healthier than 67%
16%
Risk Behavior
healthier than 74%
11%
Mental Health
healthier than 63%
8%
Healthcare Access
healthier than 67%
5%
About typical
Preventive Care
healthier than 59%
13%
Holding it back
Chronic Disease Burden
healthier than 22%
21%
Environmental Hazard
healthier than 19%
14%
Disability
healthier than 22%
7%
Climate / Disaster Risk
healthier than 7%
5%
“Share” is how much of this ZIP’s score the domain accounts for. Percentages are rounded; higher is healthier in every domain. How the score works, and who it compares you with ›
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
21713
Marylandshares a border
Score 55.88
Closest healthier
21722
Marylandshares a border
Score 52.46
Similar health profile
29307
South Carolina94% similar profile
Score 51.66
How these were chosen: only ZIPs with a published Score appear — a nearby ZIP with too little data to score won’t. Nearby means closest by distance between ZIP boundaries, which can cross state lines. A similar health profile is a close match across the nine Score domains, not similar demographics. Distances are measured between ZIP boundaries — ZIPs that touch share a border. How distance is measured
Evidence
Every measure this page draws on, by source. Collapsed by default — the full data stays in the page for search engines either way.
Health OutcomesCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Arthritis among adults | 34.8% | 32.4–37.1 |
| High blood pressure among adults | 40.9% | 38.2–43.6 |
| Cancer (non-skin) or melanoma among adults | 11.5% | 10.6–12.4 |
| Current asthma among adults | 10.6% | 9.5–11.7 |
| Coronary heart disease among adults | 8.5% | 7.7–9.4 |
| Chronic obstructive pulmonary disease among adults | 9.2% | 8.2–10.3 |
| Depression among adults | 23.2% | 20.8–25.6 |
| Diagnosed diabetes among adults | 13.7% | 12.2–15.2 |
| High cholesterol among adults who have ever been screened | 38.4% | 35.7–41.0 |
| Obesity among adults | 36.6% | 32.8–40.4 |
| Stroke among adults | 4.3% | 3.9–4.7 |
| All teeth lost among adults aged >=65 years | 9.1% | 7.6–10.6 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.9% | 6.7–9.1 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 80.0% | 77.8–82.0 |
| Visits to doctor for routine checkup within the past year among adults | 81.0% | 78.7–83.2 |
| Cholesterol screening among adults | 89.1% | 87.8–90.3 |
| Colorectal cancer screening among adults aged 45–75 years | 65.5% | 62.1–68.6 |
| Visited dentist or dental clinic in the past year among adults | 64.4% | 61.8–66.9 |
| Mammography use among women aged 50-74 years | 76.8% | 71.9–81.0 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 12.8% | 11.1–14.8 |
| Current cigarette smoking among adults | 13.9% | 12.2–15.7 |
| No leisure-time physical activity among adults | 29.4% | 26.2–32.5 |
| Short sleep duration among adults | 36.9% | 33.6–40.2 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 20.0% | 17.8–22.3 |
| Frequent mental distress among adults | 16.0% | 14.4–17.6 |
| Frequent physical distress among adults | 14.8% | 13.3–16.4 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 14.3% | 12.8–15.9 |
| Any disability among adults | 33.9% | 30.9–36.8 |
| Hearing disability among adults | 9.0% | 8.2–10.0 |
| Independent living disability among adults | 8.7% | 7.7–9.7 |
| Mobility disability among adults | 16.1% | 14.4–18.0 |
| Self-care disability among adults | 4.1% | 3.7–4.6 |
| Vision disability among adults | 5.0% | 4.5–5.5 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 22.6% | 20.0–25.2 |
| Food insecurity in the past 12 months among adults | 12.6% | 11.0–14.4 |
| Received food stamps in the past 12 months among adults | 10.8% | 9.3–12.4 |
| Housing insecurity in the past 12 months among adults | 10.4% | 9.1–11.8 |
| Lack of reliable transportation in the past 12 months among adults | 6.9% | 6.1–7.8 |
| Loneliness among adults | 33.5% | 30.2–36.8 |
| Utility services shut-off threat in the past 12 months among adults | 6.9% | 6.0–7.9 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | MD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 8.6% | 10.6% (3.1–25.8%) n=32,364 | 6.7% (1.1–19.3%) n=459 |
| Uninsured 18–64 | 5.5% | 9.0% (1.5–24.3%) n=32,286 | 4.8% (0.0–13.1%) n=459 |
| No HS diploma (25+) | 8.7% | 7.9% (1.8–20.7%) n=32,505 | 6.3% (0.5–16.6%) n=463 |
| Bachelor's or higher (25+) | 27.7% | 23.3% (9.2–53.6%) n=32,505 | 37.3% (15.0–64.4%) n=463 |
| Unemployment rate (16+) | 4.7% | 3.9% (0.0–9.8%) n=32,274 | 3.9% (0.0–8.6%) n=457 |
| Households without a vehicle | 3.5% | 3.9% (0.0–12.5%) n=32,322 | 3.2% (0.0–12.4%) n=457 |
| Broadband subscription | 92.2% | 89.3% (75.1–97.1%) n=32,322 | 93.3% (81.2–100.0%) n=457 |
| Housing cost burden (≥30% income) | 27.0% | 23.7% (10.6–40.0%) n=32,322 | 27.0% (12.0–41.8%) n=457 |
| Homeownership rate | 68.0% | 78.7% (51.7–94.0%) n=32,322 | 82.1% (49.9–98.5%) n=457 |
| Crowded housing (>1 per room) | 0.7% | 1.3% (0.0–6.3%) n=32,322 | 0.7% (0.0–4.0%) n=457 |
| Foreign-born population | 3.3% | 2.6% (0.0–18.6%) n=32,553 | 6.2% (0.0–26.4%) n=464 |
| Single-parent households | 56.0% | 53.6% (37.3–74.1%) n=32,087 | 50.9% (34.0–73.3%) n=450 |
| Population 65+ | 20.1% | 19.4% (10.8–33.6%) n=32,553 | 18.0% (10.9–33.1%) n=464 |
| Median age | 41.0 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.8 yr (34.2–57.2) n=460 |
| Median household income | $87,864 | $72,070 ($46,039–$118,707) n=30,318 | $106,181 ($62,879–$172,423) n=419 |
| Median home value | $295,800 | $222,200 ($100,300–$579,820) n=30,049 | $423,400 ($215,180–$683,660) n=427 |
| Median gross rent | $1,301 | $1,021 ($677–$1,912) n=25,670 | $1,626 ($958–$2,415) n=339 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | MD median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 78.6 yr ± 0.56 | 78.9 yr (74.7–82.8) n=31,308 | 79.5 yr (75.7–82.7) n=451 |
About the ± — it’s this estimate’s give-or-take (statisticians call it the standard error). The true life expectancy for this ZIP most likely falls within 0.56 years of 78.6, and it’s very unlikely to be off by more than twice that.
More ZIPs to explore ▾More ZIPs to explore ▴
How these lists were built: they draw only from ZIPs that have a published Score, so ZIPs with too little data to score are not listed. Distance-based lists use distance between ZIP boundaries with no state filter, so an out-of-state ZIP can appear. Statistically similar means a close match across the nine Score domains, not a demographic match: the measure is the cosine similarity between two ZIPs’ domain scores, taken over the domains both ZIPs have data for and only where that overlap covers at least six of the nine — and where no ZIP clears that minimum-overlap floor, that list is left out rather than filled with a weak match. How distance is measured