ZIP code
21645
in Kennedyville, MarylandPopulation 959
54.82/ 100
Ranked #9,665 of 32,066 US ZIPs (top 30%)
Ranked #303 of 458 Maryland ZIPs (bottom 34%)
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.
Home broadband subscription
69.1%
in the bottom 5.7% nationally
Higher is healthier
ST3rdUS6thDefinition & source ›
The share of households with a broadband internet subscription.
Full methodology ›PFAS in drinking water
9.3%
in the bottom 7.6% nationally
Lower is healthier
ST6thUS8thDefinition & source ›
The modeled probability that PFAS “forever chemicals” would be detected in untreated groundwater in this area, the source private wells draw on.
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 ›Colon-cancer screening
73.5%
in the top 6.0% nationally
Higher is healthier
ST84thUS94thDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›The read
Kennedyville, Maryland (ZIP 21645), on the composite measure, lands in the top 30% healthiest ZIPs nationally (9,665th) and the bottom 34% of Maryland (303rd).
What works most in this area's favor shows up clearly across the measures: modeled pfas lands in the bottom 7.6% nationally, and colon screening resides in the top 6.0% nationally. Distance to a community health center lies at the national minimum, shared with about 23% of ZIPs. Modeled mammography settles in the top 10.6% nationally. Crowded housing stands at the national minimum, shared with about 29% of ZIPs. Working the other way, home broadband subscription is in the bottom 5.7% nationally. Recreation rests at the national minimum, shared with about 35% of ZIPs. Modeled high cholesterol sits in the top 14.2% nationally, and housing-cost burden registers in the top 18% nationally. Physicians lands at the national minimum, shared with about 38% of ZIPs.
In everyday language, pfas is the man-made "forever chemicals" that build up in the body and environment instead of breaking down; here a modeled estimate of the chance a private well contains them. Distance to a community health center is a federally funded (HRSA) community health center serving everyone regardless of ability to pay. A healthier neighbor overall sits at ZIP 21620, just across the boundary.
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.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Environmental Hazard
healthier than 83%
14%
Preventive Care
healthier than 84%
13%
Risk Behavior
healthier than 69%
11%
Mental Health
healthier than 73%
8%
Disability
healthier than 62%
7%
Healthcare Access
healthier than 61%
5%
About typical
Social Need / SDOH
healthier than 42%
16%
Climate / Disaster Risk
healthier than 57%
5%
Holding it back
Chronic Disease Burden
healthier than 38%
21%
Lifting this score
Environmental Hazard
healthier than 84%
14%
Healthcare Access
healthier than 62%
5%
About typical
Preventive Care
healthier than 57%
13%
Risk Behavior
healthier than 44%
11%
Mental Health
healthier than 45%
8%
Climate / Disaster Risk
healthier than 56%
5%
Holding it back
Chronic Disease Burden
healthier than 22%
21%
Social Need / SDOH
healthier than 20%
16%
Disability
healthier than 28%
7%
“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
21620
Marylandshares a border
Score 56.06
Closest healthier
21667
Marylandshares a border
Score 55.56
Similar health profile
21631
Maryland97% similar profile
Score 53.47
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 | 32.6% | 29.1–36.0 |
| High blood pressure among adults | 42.4% | 38.2–46.4 |
| Cancer (non-skin) or melanoma among adults | 10.8% | 9.7–11.9 |
| Current asthma among adults | 10.0% | 8.8–11.3 |
| Coronary heart disease among adults | 8.1% | 7.0–9.1 |
| Chronic obstructive pulmonary disease among adults | 8.1% | 6.8–9.5 |
| Depression among adults | 21.9% | 18.5–25.3 |
| Diagnosed diabetes among adults | 13.6% | 11.7–15.5 |
| High cholesterol among adults who have ever been screened | 42.3% | 38.1–46.4 |
| Obesity among adults | 36.0% | 29.6–42.4 |
| Stroke among adults | 4.0% | 3.5–4.5 |
| All teeth lost among adults aged >=65 years | 9.0% | 7.3–10.9 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 9.8% | 7.8–11.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 79.2% | 76.3–81.7 |
| Visits to doctor for routine checkup within the past year among adults | 79.4% | 75.8–82.5 |
| Cholesterol screening among adults | 89.4% | 87.8–90.9 |
| Colorectal cancer screening among adults aged 45–75 years | 73.5% | 69.1–77.4 |
| Visited dentist or dental clinic in the past year among adults | 65.3% | 62.0–68.6 |
| Mammography use among women aged 50-74 years | 80.1% | 73.9–85.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.3% | 13.3–19.4 |
| Current cigarette smoking among adults | 13.0% | 10.6–15.7 |
| No leisure-time physical activity among adults | 24.6% | 20.1–29.1 |
| Short sleep duration among adults | 33.5% | 28.3–39.0 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 19.2% | 16.2–22.2 |
| Frequent mental distress among adults | 15.0% | 13.0–17.0 |
| Frequent physical distress among adults | 13.6% | 11.6–15.5 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 12.7% | 11.0–14.6 |
| Any disability among adults | 28.8% | 24.5–33.1 |
| Hearing disability among adults | 8.4% | 7.3–9.4 |
| Independent living disability among adults | 7.4% | 6.3–8.6 |
| Mobility disability among adults | 14.3% | 12.0–16.6 |
| Self-care disability among adults | 3.7% | 3.2–4.3 |
| Vision disability among adults | 4.8% | 4.1–5.4 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 22.1% | 18.8–25.7 |
| Food insecurity in the past 12 months among adults | 12.1% | 9.9–14.7 |
| Received food stamps in the past 12 months among adults | 9.6% | 7.8–11.6 |
| Housing insecurity in the past 12 months among adults | 10.3% | 8.5–12.2 |
| Lack of reliable transportation in the past 12 months among adults | 6.6% | 5.6–7.7 |
| Loneliness among adults | 30.1% | 25.7–34.9 |
| Utility services shut-off threat in the past 12 months among adults | 6.5% | 5.5–7.6 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | MD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 17.3% | 10.6% (3.1–25.8%) n=32,364 | 6.7% (1.1–19.3%) n=459 |
| Uninsured 18–64 | 10.6% | 9.0% (1.5–24.3%) n=32,286 | 4.8% (0.0–13.1%) n=459 |
| No HS diploma (25+) | 0.0% | 7.9% (1.8–20.7%) n=32,505 | 6.3% (0.5–16.6%) n=463 |
| Bachelor's or higher (25+) | 31.9% | 23.3% (9.2–53.6%) n=32,505 | 37.3% (15.0–64.4%) n=463 |
| Unemployment rate (16+) | 6.1% | 3.9% (0.0–9.8%) n=32,274 | 3.9% (0.0–8.6%) n=457 |
| Households without a vehicle | 1.7% | 3.9% (0.0–12.5%) n=32,322 | 3.2% (0.0–12.4%) n=457 |
| Broadband subscription | 69.1% | 89.3% (75.1–97.1%) n=32,322 | 93.3% (81.2–100.0%) n=457 |
| Housing cost burden (≥30% income) | 34.4% | 23.7% (10.6–40.0%) n=32,322 | 27.0% (12.0–41.8%) n=457 |
| Homeownership rate | 78.7% | 78.7% (51.7–94.0%) n=32,322 | 82.1% (49.9–98.5%) n=457 |
| Crowded housing (>1 per room) | 0.0% | 1.3% (0.0–6.3%) n=32,322 | 0.7% (0.0–4.0%) n=457 |
| Foreign-born population | 4.6% | 2.6% (0.0–18.6%) n=32,553 | 6.2% (0.0–26.4%) n=464 |
| Single-parent households | 89.7% | 53.6% (37.3–74.1%) n=32,087 | 50.9% (34.0–73.3%) n=450 |
| Population 65+ | 25.9% | 19.4% (10.8–33.6%) n=32,553 | 18.0% (10.9–33.1%) n=464 |
| Median age | 59.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.8 yr (34.2–57.2) n=460 |
| Median household income | $86,118 | $72,070 ($46,039–$118,707) n=30,318 | $106,181 ($62,879–$172,423) n=419 |
| Median home value | $297,900 | $222,200 ($100,300–$579,820) n=30,049 | $423,400 ($215,180–$683,660) n=427 |
| Median gross rent | $1,172 | $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 | 80.3 yr ± 1.18 | 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 1.18 years of 80.3, 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