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ZIP code

21665

in Sherwood, MarylandPopulation 229

ZipVitals Score
How is the ZipVitals Score calculated? →

56.10/ 100

Ranked #8,167 of 32,066 US ZIPs (top 25%)

Ranked #270 of 458 Maryland ZIPs (bottom 41%)

Ranks are modeled estimates — ZIPs a few hundred places apart are effectively tied.

Robust across all 9 health domains

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.

Homeownership rate

100%

at the national maximum

Higher is healthier

ST99th
US99th
Definition & source ›

The share of occupied homes that are owned, rather than rented, by the people living in them.

Full methodology ›

Home broadband subscription

100%

at the national maximum

Higher is healthier

ST99th
US99th
Definition & source ›

The share of households with a broadband internet subscription.

Full methodology ›

Floodplain exposure

42.2%

in the top 5.7% nationally

Lower is healthier

ST94th
US94th
Definition & source ›

The share of this ZIP’s land area inside FEMA’s 1%-annual-chance floodplain — the “100-year” flood zone, where flooding has about a 1-in-100 chance in any given year.

Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.

Full methodology ›

PFAS in drinking water

8.8%

in the bottom 6.4% nationally

Lower is healthier

ST4th
US6th
Definition & 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 ›

Industrial-pollution burden

in the bottom 6.7% nationally

Lower is healthier

ST2nd
US7th
Definition & source ›

The EPA’s modeled screening score for industrial chemical releases, weighting the amounts released by their toxicity and how many people live nearby — a relative comparison score, not a measured exposure.

Full methodology ›

Distance to a nursing home

11.2 mi

in the top 9.0% nationally

Lower is healthier

ST98th
US91st
Definition & source ›

The distance in miles from this ZIP’s edge to the nearest Medicare- or Medicaid-certified nursing home.

Full methodology ›

Slow internet speeds

0.57%

in the top 18% nationally

Lower is healthier

ST91st
US82nd
Definition & source ›

The share of homes whose fastest available download speed is under 10 Mbps.

Full methodology ›

Walkability

3.7 intersections/sq mi

in the bottom 22% nationally

Higher is healthier

ST2nd
US22nd
Definition & source ›

The number of street intersections per square mile — a standard street-connectivity measure; denser networks correlate with more walkable neighborhoods.

Full methodology ›

Dry extreme heat

0.1 days/year

in the bottom 22% nationally

Lower is healthier

ST10th
US22nd
Definition & source ›

The average number of days per year with a modeled daily high of at least 95 °F.

Full methodology ›

Tree cover

2.1%

in the bottom 28% nationally

Higher is healthier

ST10th
US28th
Definition & source ›

The share of this ZIP’s land area covered by forest.

Full methodology ›

The read

Sherwood, Maryland (ZIP 21665) ranks in the top 25% healthiest ZIPs nationally (8,167th) and the bottom 41% of Maryland (270th).

continue reading

A balanced set of signals defines this area, not any single one: homeownership lies at the national maximum, and home broadband subscription is at the national maximum. Modeled pfas registers in the bottom 6.4% nationally, and industrial-pollution burden lies in the bottom 6.7% nationally. Unemployment is at the national minimum, shared with about 15% of ZIPs. Households without a vehicle registers at the national minimum, shared with about 16% of ZIPs. Modeled loud transportation noise lies at the national minimum, shared with about 22% of ZIPs. By contrast, floodplain exposure is in the top 5.7% nationally, and distance to a nursing home registers in the top 9.0% nationally. Fiber broadband lies at the national minimum, shared with about 19% of ZIPs.

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. Industrial-pollution burden is the EPA's modeled screening score weighting industrial chemical releases by their toxicity and how many people live nearby. Floodplain exposure is land with about a 1-in-100 chance of flooding each year, nicknamed the "100-year floodplain". The closest ZIP that ranks healthier overall is ZIP 21612, 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.

Compare within

Lifting this score

Social Need / SDOH

healthier than 69%

16%

Environmental Hazard

healthier than 79%

14%

Preventive Care

healthier than 85%

13%

Risk Behavior

healthier than 77%

11%

Mental Health

healthier than 67%

8%

Disability

healthier than 69%

7%

About typical

Chronic Disease Burden

healthier than 56%

21%

Holding it back

Climate / Disaster Risk

healthier than 14%

5%

Healthcare Access

healthier than 37%

5%

Lifting this score

Environmental Hazard

healthier than 75%

14%

About typical

Social Need / SDOH

healthier than 43%

16%

Preventive Care

healthier than 58%

13%

Risk Behavior

healthier than 57%

11%

Holding it back

Chronic Disease Burden

healthier than 38%

21%

Mental Health

healthier than 39%

8%

Disability

healthier than 35%

7%

Climate / Disaster Risk

healthier than 6%

5%

Healthcare Access

healthier than 31%

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.

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
MeasureCrude prevalence95% CI
Arthritis among adults30.9%27.8–34.4
High blood pressure among adults37.2%33.6–41.1
Cancer (non-skin) or melanoma among adults11.0%9.8–12.2
Current asthma among adults10.8%9.6–12.3
Coronary heart disease among adults7.0%5.9–8.4
Chronic obstructive pulmonary disease among adults7.7%6.0–9.7
Depression among adults22.8%19.8–26.1
Diagnosed diabetes among adults11.1%9.4–13.1
High cholesterol among adults who have ever been screened40.8%37.2–44.5
Obesity among adults29.6%24.8–34.8
Stroke among adults3.6%3.0–4.3
All teeth lost among adults aged >=65 years7.6%6.1–9.3
PreventionCDC PLACES 2022 / 2023 · BRFSS
MeasureCrude prevalence95% CI
Current lack of health insurance among adults aged 18-64 years6.8%5.0–9.1
Taking medicine to control high blood pressure among adults with high blood pressure79.1%76.3–81.9
Visits to doctor for routine checkup within the past year among adults80.5%77.4–83.3
Cholesterol screening among adults90.3%88.5–91.9
Colorectal cancer screening among adults aged 45–75 years69.5%65.4–73.4
Visited dentist or dental clinic in the past year among adults66.6%63.3–69.7
Mammography use among women aged 50-74 years78.0%71.5–83.4
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
MeasureCrude prevalence95% CI
Binge drinking among adults16.3%13.7–19.0
Current cigarette smoking among adults12.6%9.4–16.2
No leisure-time physical activity among adults22.8%18.3–27.8
Short sleep duration among adults32.4%27.9–36.9
Health StatusCDC PLACES 2023 · BRFSS
MeasureCrude prevalence95% CI
Fair or poor self-rated health status among adults17.7%14.1–21.7
Frequent mental distress among adults15.1%12.9–17.5
Frequent physical distress among adults13.8%11.5–16.4
DisabilityCDC PLACES 2023 · BRFSS
MeasureCrude prevalence95% CI
Cognitive disability among adults12.7%10.4–15.2
Any disability among adults28.8%24.2–33.8
Hearing disability among adults7.7%6.6–9.0
Independent living disability among adults7.4%5.9–9.0
Mobility disability among adults13.9%11.1–17.2
Self-care disability among adults3.5%2.8–4.4
Vision disability among adults4.2%3.4–5.2
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
MeasureCrude prevalence95% CI
Lack of social and emotional support among adults20.5%17.0–24.4
Food insecurity in the past 12 months among adults10.5%7.7–14.0
Received food stamps in the past 12 months among adults8.5%6.1–11.6
Housing insecurity in the past 12 months among adults9.1%7.1–11.4
Lack of reliable transportation in the past 12 months among adults5.8%4.6–7.2
Loneliness among adults32.0%27.4–36.9
Utility services shut-off threat in the past 12 months among adults5.6%4.6–6.9
Community & economyCensus ACS 5-Year · 2024 release · observed
MeasureValueUS median (p10–p90)MD median (p10–p90)
Poverty rate11.8%10.6% (3.1–25.8%) n=32,3646.7% (1.1–19.3%) n=459
Uninsured 18–640.0%9.0% (1.5–24.3%) n=32,2864.8% (0.0–13.1%) n=459
No HS diploma (25+)3.1%7.9% (1.8–20.7%) n=32,5056.3% (0.5–16.6%) n=463
Bachelor's or higher (25+)41.1%23.3% (9.2–53.6%) n=32,50537.3% (15.0–64.4%) n=463
Unemployment rate (16+)0.0%3.9% (0.0–9.8%) n=32,2743.9% (0.0–8.6%) n=457
Households without a vehicle0.0%3.9% (0.0–12.5%) n=32,3223.2% (0.0–12.4%) n=457
Broadband subscription100.0%89.3% (75.1–97.1%) n=32,32293.3% (81.2–100.0%) n=457
Housing cost burden (≥30% income)36.7%23.7% (10.6–40.0%) n=32,32227.0% (12.0–41.8%) n=457
Homeownership rate100.0%78.7% (51.7–94.0%) n=32,32282.1% (49.9–98.5%) n=457
Crowded housing (>1 per room)0.0%1.3% (0.0–6.3%) n=32,3220.7% (0.0–4.0%) n=457
Foreign-born population4.8%2.6% (0.0–18.6%) n=32,5536.2% (0.0–26.4%) n=464
Single-parent households76.8%53.6% (37.3–74.1%) n=32,08750.9% (34.0–73.3%) n=450
Population 65+37.6%19.4% (10.8–33.6%) n=32,55318.0% (10.9–33.1%) n=464
Median age60.4 yr42.2 yr (33.0–56.3) n=32,29241.8 yr (34.2–57.2) n=460
Median household income—$72,070 ($46,039–$118,707) n=30,318$106,181 ($62,879–$172,423) n=419
Median home value$672,600$222,200 ($100,300–$579,820) n=30,049$423,400 ($215,180–$683,660) n=427
Median gross rent—$1,021 ($677–$1,912) n=25,670$1,626 ($958–$2,415) n=339
Life expectancyNCHS / RWJF USALEEP · model-based
MeasureValueUS median (p10–p90)MD median (p10–p90)
Life expectancy at birth77.9 yr ± 0.9378.9 yr (74.7–82.8) n=31,30879.5 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 0.93 years of 77.9, and it’s very unlikely to be off by more than twice that.

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