ZIP code
20662
in Nanjemoy, MarylandPopulation 2,129
52.09/ 100
Ranked #13,334 of 32,066 US ZIPs (top 42%)
Ranked #357 of 458 Maryland ZIPs (bottom 22%)
Ranked #271 of 308 Washington-Arlington-Alexandria, DC-VA-MD-WV ZIPs (bottom 12.1%)
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.
PFAS in drinking water
6.6%
in the bottom 2.9% nationally
Lower is healthier
ST3rdUS3rdDefinition & 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 ›Transit access
5.1 per 1,000 residents
in the top 4.8% nationally
Higher is healthier
ST90thUS95thDefinition & source ›
The number of public-transit stops 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 ›Transportation noise
0.03%
in the bottom 6.6% nationally
Lower is healthier
ST8thUS7thDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 55 decibels — a noticeable background presence.
Full methodology ›Distance to a Superfund site
1.3 mi
in the bottom 8.2% nationally
Higher is healthier
ST10thUS8thDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Superfund site — an abandoned or uncontrolled hazardous-waste site the EPA has listed for cleanup.
Full methodology ›Home broadband subscription
74.7%
in the bottom 9.7% nationally
Higher is healthier
ST5thUS10thDefinition & source ›
The share of households with a broadband internet subscription.
Full methodology ›High blood pressure
45.9%
in the top 10.0% nationally
Lower is healthier
ST97thUS90thDefinition & source ›
The estimated share of adults who have been told by a health professional that they have high blood pressure.
Full methodology ›Fatal road crashes
28.2 per 100,000 residents per year
in the top 15% nationally
Lower is healthier
ST93rdUS85thDefinition & source ›
The annual rate of fatal road crashes per 100,000 residents, pooled over a ten-year window.
A rate per resident population. Where a ZIP has too few residents for the rate to be reliable — about 30% of US ZIPs — no value is published rather than an unstable one; those ZIPs are absent from this comparison, not counted as crash-free.
Full methodology ›Obesity
41.8%
in the top 13.9% nationally
Lower is healthier
ST91stUS86thDefinition & source ›
The estimated share of adults with obesity, defined as a body-mass index of 30 or higher.
Full methodology ›Tree cover
56.1%
in the top 18% nationally
Higher is healthier
ST94thUS82ndDefinition & source ›
The share of this ZIP’s land area covered by forest.
Full methodology ›Diabetes
15.9%
in the top 18% nationally
Lower is healthier
ST94thUS82ndDefinition & source ›
The estimated share of adults who have been diagnosed with diabetes.
Full methodology ›The read
Nanjemoy, Maryland (ZIP 20662) ranks in the top 42% healthiest ZIPs nationally (13,334th) and the bottom 22% of Maryland (357th).
Several of the strongest readings define how this area looks: modeled pfas resides in the bottom 2.9% nationally, and transit stands in the top 4.8% nationally. Modeled transportation noise sits in the bottom 6.6% nationally. Modeled loud transportation noise resides at the national minimum, shared with about 22% of ZIPs. Crowded housing stands at the national minimum, shared with about 29% of ZIPs. On the other hand, distance to a Superfund site sits in the bottom 8.2% nationally, home broadband subscription resides in the bottom 9.7% nationally, and modeled high blood pressure stands in the top 10.0% nationally. Households without a vehicle sits in the top 14.8% nationally, and fatal road crashes resides in the top 15% nationally.
Against its neighbors, park land runs far lower than the surrounding ZIPs on this measure. For context, 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 Superfund site is an abandoned or uncontrolled hazardous-waste site the EPA has identified for cleanup. Transportation noise is the modeled share of an area exposed to average road, rail, and air noise at or above 55 decibels. The closest ZIP that ranks healthier overall is ZIP 20640, 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. Compare it against the US, this state and the Washington-Arlington-Alexandria, DC-VA-MD-WV metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Environmental Hazard
healthier than 82%
14%
Preventive Care
healthier than 79%
13%
Risk Behavior
healthier than 61%
11%
Mental Health
healthier than 76%
8%
About typical
Social Need / SDOH
healthier than 41%
16%
Disability
healthier than 53%
7%
Holding it back
Chronic Disease Burden
healthier than 28%
21%
Climate / Disaster Risk
healthier than 37%
5%
Healthcare Access
healthier than 36%
5%
Lifting this score
Environmental Hazard
healthier than 82%
14%
About typical
Preventive Care
healthier than 46%
13%
Mental Health
healthier than 52%
8%
Holding it back
Chronic Disease Burden
healthier than 15%
21%
Social Need / SDOH
healthier than 19%
16%
Risk Behavior
healthier than 34%
11%
Disability
healthier than 20%
7%
Climate / Disaster Risk
healthier than 23%
5%
Healthcare Access
healthier than 29%
5%
Lifting this score
Environmental Hazard
healthier than 94%
14%
About typical
Preventive Care
healthier than 52%
13%
Holding it back
Chronic Disease Burden
healthier than 3%
21%
Social Need / SDOH
healthier than 9%
16%
Risk Behavior
healthier than 21%
11%
Mental Health
healthier than 35%
8%
Disability
healthier than 11%
7%
Climate / Disaster Risk
healthier than 15%
5%
Healthcare Access
healthier than 21%
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 ›
Findings that name this ZIP
One of our published findings lists this ZIP code. Each finding compares one published measure against a stated benchmark, and names only the ZIP codes whose estimates are reliable enough to rank. See all surprising findings.
Clean environment, heavy chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 81.8; chronic-disease standing 28.4 — 53 points apart, cleaner on the environment than it is on chronic illness.
Ranked #2,231 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
20640
Marylandshares a border
Score 55.60
Closest healthier
20646
Marylandshares a border
Score 60.82
Similar health profile
55790
Minnesota96% similar profile
Score 54.01
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 | 31.7% | 29.0–34.4 |
| High blood pressure among adults | 45.9% | 42.9–49.0 |
| Cancer (non-skin) or melanoma among adults | 8.9% | 8.1–9.8 |
| Current asthma among adults | 10.6% | 9.5–11.9 |
| Coronary heart disease among adults | 7.5% | 6.7–8.4 |
| Chronic obstructive pulmonary disease among adults | 8.2% | 7.0–9.4 |
| Depression among adults | 19.4% | 17.0–21.9 |
| Diagnosed diabetes among adults | 15.9% | 14.2–17.8 |
| High cholesterol among adults who have ever been screened | 41.6% | 38.5–44.8 |
| Obesity among adults | 41.8% | 37.4–46.2 |
| Stroke among adults | 4.4% | 4.0–4.9 |
| All teeth lost among adults aged >=65 years | 12.9% | 10.6–15.3 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.5% | 6.1–9.1 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 80.7% | 78.4–82.9 |
| Visits to doctor for routine checkup within the past year among adults | 81.1% | 78.5–83.6 |
| Cholesterol screening among adults | 90.1% | 88.6–91.5 |
| Colorectal cancer screening among adults aged 45–75 years | 68.4% | 64.5–71.8 |
| Visited dentist or dental clinic in the past year among adults | 57.6% | 54.6–60.5 |
| Mammography use among women aged 50-74 years | 78.3% | 72.9–82.7 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 13.3% | 11.3–15.6 |
| Current cigarette smoking among adults | 14.4% | 12.0–16.9 |
| No leisure-time physical activity among adults | 26.0% | 22.4–29.6 |
| Short sleep duration among adults | 38.6% | 34.7–42.4 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 20.4% | 17.5–23.1 |
| Frequent mental distress among adults | 16.4% | 14.6–18.3 |
| Frequent physical distress among adults | 14.3% | 12.6–16.1 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 13.3% | 11.6–15.1 |
| Any disability among adults | 30.5% | 26.9–34.1 |
| Hearing disability among adults | 7.2% | 6.4–8.1 |
| Independent living disability among adults | 8.2% | 7.1–9.2 |
| Mobility disability among adults | 15.8% | 13.7–18.0 |
| Self-care disability among adults | 4.4% | 3.9–5.0 |
| Vision disability among adults | 5.4% | 4.7–6.0 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 25.4% | 22.1–28.8 |
| Food insecurity in the past 12 months among adults | 15.8% | 13.3–18.5 |
| Received food stamps in the past 12 months among adults | 12.6% | 10.5–14.9 |
| Housing insecurity in the past 12 months among adults | 12.8% | 10.9–14.8 |
| Lack of reliable transportation in the past 12 months among adults | 8.1% | 7.0–9.2 |
| Loneliness among adults | 33.8% | 29.9–37.7 |
| Utility services shut-off threat in the past 12 months among adults | 8.7% | 7.5–10.0 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | MD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 14.1% | 10.6% (3.1–25.8%) n=32,364 | 6.7% (1.1–19.3%) n=459 |
| Uninsured 18–64 | 6.7% | 9.0% (1.5–24.3%) n=32,286 | 4.8% (0.0–13.1%) n=459 |
| No HS diploma (25+) | 6.2% | 7.9% (1.8–20.7%) n=32,505 | 6.3% (0.5–16.6%) n=463 |
| Bachelor's or higher (25+) | 21.0% | 23.3% (9.2–53.6%) n=32,505 | 37.3% (15.0–64.4%) n=463 |
| Unemployment rate (16+) | 0.8% | 3.9% (0.0–9.8%) n=32,274 | 3.9% (0.0–8.6%) n=457 |
| Households without a vehicle | 10.0% | 3.9% (0.0–12.5%) n=32,322 | 3.2% (0.0–12.4%) n=457 |
| Broadband subscription | 74.7% | 89.3% (75.1–97.1%) n=32,322 | 93.3% (81.2–100.0%) n=457 |
| Housing cost burden (≥30% income) | 30.2% | 23.7% (10.6–40.0%) n=32,322 | 27.0% (12.0–41.8%) n=457 |
| Homeownership rate | 88.4% | 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 | 0.8% | 2.6% (0.0–18.6%) n=32,553 | 6.2% (0.0–26.4%) n=464 |
| Single-parent households | 53.1% | 53.6% (37.3–74.1%) n=32,087 | 50.9% (34.0–73.3%) n=450 |
| Population 65+ | 17.8% | 19.4% (10.8–33.6%) n=32,553 | 18.0% (10.9–33.1%) n=464 |
| Median age | 41.8 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.8 yr (34.2–57.2) n=460 |
| Median household income | $86,699 | $72,070 ($46,039–$118,707) n=30,318 | $106,181 ($62,879–$172,423) n=419 |
| Median home value | $397,300 | $222,200 ($100,300–$579,820) n=30,049 | $423,400 ($215,180–$683,660) n=427 |
| Median gross rent | $1,170 | $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 | 82.0 yr ± 2.27 | 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 2.27 years of 82.0, 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