ZIP code
77837
in Calvert, TexasPopulation 1,030
46.03/ 100
Ranked #21,324 of 32,066 US ZIPs (bottom 33%)
Ranked #857 of 1,868 Texas ZIPs (top 46%)
Ranked #8 of 15 College Station-Bryan, TX ZIPs (bottom 47%)
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.
Dry extreme heat
85.7 days/year
in the top 4.1% nationally
Lower is healthier
ST59thUS96thDefinition & source ›
The average number of days per year with a modeled daily high of at least 95 °F.
Full methodology ›Fatal road crashes
48.5 per 100,000 residents per year
in the top 4.3% nationally
Lower is healthier
ST91stUS96thDefinition & 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 ›Humid extreme heat
139 days/year
in the top 7.6% nationally
Lower is healthier
ST60thUS92ndDefinition & source ›
The average number of days per year when modeled heat stress — temperature, humidity, sun, and wind combined — reaches levels hard on the body outdoors.
Full methodology ›Distance to an emergency room
17.1 mi
in the top 8.2% nationally
Lower is healthier
ST91stUS92ndDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Medicare-certified hospital with an emergency room.
Full methodology ›Floodplain exposure
31.6%
in the top 9.3% nationally
Lower is healthier
ST86thUS91stDefinition & 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 ›Housing-cost burden
10.3%
in the bottom 9.8% nationally
Lower is healthier
ST11thUS10thDefinition & source ›
The share of households spending 30% or more of their income on housing.
Full methodology ›Radon
0.7 pCi/L
in the bottom 4.3% nationally
Lower is healthier
ST27thUS4thDefinition & 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 ›High blood pressure
45.1%
in the top 12.1% nationally
Lower is healthier
ST93rdUS88thDefinition & source ›
The estimated share of adults who have been told by a health professional that they have high blood pressure.
Full methodology ›Binge drinking
13.2%
in the bottom 16% nationally
Lower is healthier
ST5thUS16thDefinition & source ›
The estimated share of adults who report binge drinking — five or more drinks on one occasion for men, four or more for women.
Full methodology ›Cross-source signals
Combined exposures in this ZIP
More than one environmental exposure stands out in this ZIP. Each is established independently and shown on its own above; they are grouped here for context — not because one causes the other.
This area ranks among the highest 10% of US ZIP codes for both humid-heat days and flood exposure.
See the full flooding, evacuation & humid-heat analysis →
The read
Judged by its overall standing, Calvert, Texas (ZIP 77837) sits in the bottom 33% nationally (21,324th) and the top 46% of Texas (857th).
A few readings each way define this mixed profile: housing-cost burden settles in the bottom 9.8% nationally, modeled radon lands in the bottom 4.3% nationally, and modeled arsenic rests in the bottom 12.7% nationally. Pulling the other way, modeled extreme heat settles in the top 4.1% nationally, fatal road crashes lands in the top 4.3% nationally, and modeled humid heat rests in the top 7.6% nationally. Distance to an emergency room settles in the top 8.2% nationally, and floodplain exposure lands in the top 9.3% nationally. Modeled diabetes rests in the top 11.0% nationally, and high blood pressure settles in the top 12.1% nationally.
Put plainly, radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. Arsenic is a natural groundwater contaminant, here a modeled estimate of the chance private-well levels exceed a benchmark. Extreme heat is a modeled count of days a year reaching a dangerously high temperature, a leading weather hazard. A healthier nearby ZIP overall is ZIP 77856, 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 College Station-Bryan, TX 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 86%
14%
Mental Health
healthier than 77%
8%
About typical
Social Need / SDOH
healthier than 48%
16%
Preventive Care
healthier than 47%
13%
Risk Behavior
healthier than 41%
11%
Healthcare Access
healthier than 44%
5%
Holding it back
Chronic Disease Burden
healthier than 23%
21%
Disability
healthier than 27%
7%
Climate / Disaster Risk
healthier than 2%
5%
Lifting this score
Environmental Hazard
healthier than 76%
14%
Preventive Care
healthier than 88%
13%
Mental Health
healthier than 84%
8%
About typical
Social Need / SDOH
healthier than 43%
16%
Risk Behavior
healthier than 59%
11%
Healthcare Access
healthier than 40%
5%
Holding it back
Chronic Disease Burden
healthier than 10%
21%
Disability
healthier than 33%
7%
Climate / Disaster Risk
healthier than 8%
5%
Lifting this score
Environmental Hazard
healthier than 85%
14%
Preventive Care
in the top 0.00%
13%
Mental Health
healthier than 92%
8%
About typical
Social Need / SDOH
healthier than 46%
16%
Holding it back
Chronic Disease Burden
healthier than 8%
21%
Risk Behavior
healthier than 38%
11%
Disability
healthier than 31%
7%
Climate / Disaster Risk
healthier than 38%
5%
Healthcare Access
healthier than 23%
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 85.7; chronic-disease standing 22.8 — 63 points apart, cleaner on the environment than it is on chronic illness.
Ranked #1,533 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
76520
Texasshares a border
Score 41.19
Closest healthier
77856
Texasshares a border
Score 50.62
Similar health profile
33952
Florida99% similar profile
Score 45.10
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 | 31.0% | 27.3–34.8 |
| High blood pressure among adults | 45.1% | 40.4–49.8 |
| Cancer (non-skin) or melanoma among adults | 8.9% | 8.1–9.9 |
| Current asthma among adults | 10.8% | 9.6–12.2 |
| Coronary heart disease among adults | 8.6% | 7.6–9.6 |
| Chronic obstructive pulmonary disease among adults | 8.5% | 7.3–9.9 |
| Depression among adults | 19.8% | 16.7–23.3 |
| Diagnosed diabetes among adults | 17.2% | 15.0–19.7 |
| High cholesterol among adults who have ever been screened | 41.2% | 36.4–46.2 |
| Obesity among adults | 37.7% | 29.2–47.0 |
| Stroke among adults | 5.1% | 4.6–5.7 |
| All teeth lost among adults aged >=65 years | 16.9% | 13.9–20.4 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 14.9% | 12.5–17.7 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 82.1% | 79.5–84.5 |
| Visits to doctor for routine checkup within the past year among adults | 79.9% | 76.4–83.0 |
| Cholesterol screening among adults | 89.0% | 87.6–90.5 |
| Colorectal cancer screening among adults aged 45–75 years | 64.0% | 58.8–69.2 |
| Visited dentist or dental clinic in the past year among adults | 54.4% | 50.7–58.2 |
| Mammography use among women aged 50-74 years | 76.5% | 69.3–83.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 13.2% | 10.7–15.9 |
| Current cigarette smoking among adults | 14.2% | 12.0–16.8 |
| No leisure-time physical activity among adults | 30.7% | 25.8–36.3 |
| Short sleep duration among adults | 40.8% | 33.6–48.6 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 25.3% | 22.0–28.9 |
| Frequent mental distress among adults | 16.0% | 14.1–18.1 |
| Frequent physical distress among adults | 15.4% | 13.4–17.5 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 14.7% | 12.8–16.9 |
| Any disability among adults | 36.4% | 31.7–41.7 |
| Hearing disability among adults | 8.4% | 7.4–9.5 |
| Independent living disability among adults | 9.7% | 8.4–11.2 |
| Mobility disability among adults | 20.0% | 17.2–23.0 |
| Self-care disability among adults | 5.4% | 4.7–6.1 |
| Vision disability among adults | 6.9% | 6.0–7.7 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | TX median (p10–p90) |
|---|---|---|---|
| Poverty rate | 6.8% | 10.6% (3.1–25.8%) n=32,364 | 12.4% (3.5–26.4%) n=1,869 |
| Uninsured 18–64 | 11.6% | 9.0% (1.5–24.3%) n=32,286 | 22.3% (8.2–41.5%) n=1,862 |
| No HS diploma (25+) | 17.1% | 7.9% (1.8–20.7%) n=32,505 | 12.2% (2.5–30.0%) n=1,881 |
| Bachelor's or higher (25+) | 26.6% | 23.3% (9.2–53.6%) n=32,505 | 21.9% (9.0–51.4%) n=1,881 |
| Unemployment rate (16+) | 8.2% | 3.9% (0.0–9.8%) n=32,274 | 4.2% (0.0–9.4%) n=1,865 |
| Households without a vehicle | 6.5% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.8%) n=1,868 |
| Broadband subscription | 82.2% | 89.3% (75.1–97.1%) n=32,322 | 89.2% (75.0–97.3%) n=1,868 |
| Housing cost burden (≥30% income) | 10.3% | 23.7% (10.6–40.0%) n=32,322 | 26.2% (8.8–40.3%) n=1,868 |
| Homeownership rate | 71.7% | 78.7% (51.7–94.0%) n=32,322 | 75.0% (46.4–92.3%) n=1,868 |
| Crowded housing (>1 per room) | 0.6% | 1.3% (0.0–6.3%) n=32,322 | 3.1% (0.0–9.0%) n=1,868 |
| Foreign-born population | 5.2% | 2.6% (0.0–18.6%) n=32,553 | 8.1% (0.1–26.4%) n=1,886 |
| Single-parent households | 64.7% | 53.6% (37.3–74.1%) n=32,087 | 48.5% (34.3–70.6%) n=1,861 |
| Population 65+ | 27.8% | 19.4% (10.8–33.6%) n=32,553 | 16.1% (8.6–30.1%) n=1,886 |
| Median age | 52.4 yr | 42.2 yr (33.0–56.3) n=32,292 | 38.3 yr (30.9–52.3) n=1,866 |
| Median household income | $57,917 | $72,070 ($46,039–$118,707) n=30,318 | $69,983 ($46,006–$112,413) n=1,737 |
| Median home value | $119,600 | $222,200 ($100,300–$579,820) n=30,049 | $210,500 ($97,060–$429,760) n=1,693 |
| Median gross rent | $846 | $1,021 ($677–$1,912) n=25,670 | $1,154 ($764–$1,815) n=1,508 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | TX median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 80.4 yr ± 1.64 | 78.9 yr (74.7–82.8) n=31,308 | 78.2 yr (75.1–81.7) n=1,772 |
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 1.64 years of 80.4, 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