ZIP code
77303
in Conroe, TexasPopulation 28,854
41.90/ 100
Ranked #25,302 of 32,066 US ZIPs (bottom 21%)
Ranked #1,305 of 1,868 Texas ZIPs (bottom 30%)
Ranked #174 of 237 Houston-Pasadena-The Woodlands, TX ZIPs (bottom 27%)
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.
Air-toxics cancer risk
56.6 per million
in the top 0.4% nationally
Lower is healthier
ST99thUS99thDefinition & source ›
The EPA’s modeled estimate of added lifetime cancer risk from breathing outdoor air toxics, in cases per million people exposed over a lifetime.
Full methodology ›Uninsured (under 65)
20.4%
in the top 4.2% nationally
Lower is healthier
ST69thUS96thDefinition & source ›
The estimated share of adults aged 18–64 with no current health-insurance coverage.
Full methodology ›Humid extreme heat
158.4 days/year
in the top 2.9% nationally
Lower is healthier
ST91stUS97thDefinition & 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 ›Industrial-pollution burden
in the top 3.6% nationally
Lower is healthier
ST90thUS96thDefinition & 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 Superfund site
0.4 mi
in the bottom 5.3% nationally
Higher is healthier
ST4thUS5thDefinition & 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 ›Crowded housing
8.6%
in the top 6.0% nationally
Lower is healthier
ST89thUS94thDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Expected annual disaster loss
$0
in the top 8.6% nationally
Lower is healthier
ST81stUS91stDefinition & source ›
FEMA’s modeled estimate, in dollars per year, of the average harm to people expected from natural hazards — an annualized average, not a forecast for any single year.
Full methodology ›Dry extreme heat
51.2 days/year
in the top 9.1% nationally
Lower is healthier
ST21stUS91stDefinition & source ›
The average number of days per year with a modeled daily high of at least 95 °F.
Full methodology ›Colon-cancer screening
58.1%
in the bottom 9.5% nationally
Higher is healthier
ST31stUS9thDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›Radon
0.8 pCi/L
in the bottom 8.5% nationally
Lower is healthier
ST47thUS8thDefinition & 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 ›The read
ZIP 77303, one of several in Conroe, Texas, by its composite score, sits in the bottom 21% nationally (25,302nd) and the bottom 30% of Texas (1,305th).
The measures that matter most for this area lead the way: modeled air-toxics cancer risk lies in the top 0.4% nationally, and uninsured rests in the top 4.2% nationally. Modeled humid heat resides in the top 2.9% nationally, and industrial-pollution burden is in the top 3.6% nationally. Distance to a Superfund site lands in the bottom 5.3% nationally, crowded housing stands in the top 6.0% nationally, and modeled expected annual loss registers in the top 8.6% nationally. Modeled extreme heat settles in the top 9.1% nationally, and colon screening sits in the bottom 9.5% nationally. On the better side, subsidized affordable housing lies in the top 12.3% nationally.
Next to the surrounding area, industrial-pollution burden runs far higher than the surrounding ZIPs on this measure. For anyone unfamiliar, air-toxics cancer risk is a modeled EPA estimate of added lifetime cancer risk from breathing outdoor air, per million people. Industrial-pollution burden is the EPA's modeled screening score weighting industrial chemical releases by their toxicity and how many people live nearby. Distance to a Superfund site is an abandoned or uncontrolled hazardous-waste site the EPA has identified for cleanup. For a healthier comparison close by, see ZIP 77301, 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 Houston-Pasadena-The Woodlands, TX metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Chronic Disease Burden
healthier than 64%
21%
Healthcare Access
healthier than 65%
5%
About typical
Social Need / SDOH
healthier than 52%
16%
Holding it back
Environmental Hazard
healthier than 7%
14%
Preventive Care
healthier than 6%
13%
Risk Behavior
healthier than 12%
11%
Mental Health
healthier than 24%
8%
Disability
healthier than 32%
7%
Climate / Disaster Risk
healthier than 13%
5%
Lifting this score
Climate / Disaster Risk
healthier than 74%
5%
About typical
Chronic Disease Burden
healthier than 52%
21%
Social Need / SDOH
healthier than 50%
16%
Healthcare Access
healthier than 57%
5%
Holding it back
Environmental Hazard
healthier than 6%
14%
Preventive Care
healthier than 25%
13%
Risk Behavior
healthier than 17%
11%
Mental Health
healthier than 13%
8%
Disability
healthier than 39%
7%
Lifting this score
Climate / Disaster Risk
healthier than 62%
5%
About typical
Social Need / SDOH
healthier than 41%
16%
Holding it back
Chronic Disease Burden
healthier than 36%
21%
Environmental Hazard
healthier than 22%
14%
Preventive Care
healthier than 36%
13%
Risk Behavior
healthier than 24%
11%
Mental Health
healthier than 7%
8%
Disability
healthier than 35%
7%
Healthcare Access
healthier than 29%
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
4 of our published findings list 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.
Below what income predicts
The ZIP codes that outlive their incomes
Estimated life expectancy is 74.9 ± 1.1 years. A median household income of $75,348 predicts 79.0 years — 4.1 years below.
Ranked #5,126 of the 5,842 ZIP codes this finding names, ordered by years above what income predicts, highest first.
Below its nearby ZIPs
The ZIP codes that outlive their neighbors
Estimated life expectancy is 74.9 ± 1.1 years. The 46 nearest ZIP codes with estimates average 77.8 years — 2.9 years below them.
Ranked #2,312 of the 3,687 ZIP codes this finding names, ordered by years above the nearby-ZIP average, highest first.
Heavy environment, light chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 6.9 (bottom 10%); chronic-disease standing 63.9 — 57 points apart, heavier on the environment than it is on chronic illness.
Ranked #15,108 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Highest-risk tenth
Air toxics and the years between the two ends of the risk scale
Modeled air-toxics cancer risk is 56.6 cases per million — among the tenth of compared ZIP codes with the most. Estimated life expectancy is 74.9 ± 1.1 years.
Ranked #60 of the 4,173 ZIP codes this finding names, ordered by modeled air-toxics risk, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
77301
Texasshares a border
Score 42.18
Closest healthier
77304
Texasshares a border
Score 53.57
Similar health profile
76114
Texas97% similar profile
Score 40.46
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 | 25.1% | 22.2–28.1 |
| High blood pressure among adults | 34.5% | 30.7–38.4 |
| Cancer (non-skin) or melanoma among adults | 6.7% | 6.1–7.4 |
| Current asthma among adults | 10.4% | 9.2–11.7 |
| Coronary heart disease among adults | 6.4% | 5.7–7.0 |
| Chronic obstructive pulmonary disease among adults | 7.9% | 7.0–8.7 |
| Depression among adults | 23.9% | 20.4–27.4 |
| Diagnosed diabetes among adults | 13.5% | 11.7–15.2 |
| High cholesterol among adults who have ever been screened | 37.3% | 33.3–41.3 |
| Obesity among adults | 35.8% | 29.2–42.9 |
| Stroke among adults | 3.6% | 3.3–3.8 |
| All teeth lost among adults aged >=65 years | 14.9% | 12.4–17.6 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 20.4% | 18.3–22.8 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 74.4% | 71.2–77.2 |
| Visits to doctor for routine checkup within the past year among adults | 72.2% | 68.1–75.8 |
| Cholesterol screening among adults | 83.0% | 81.0–85.0 |
| Colorectal cancer screening among adults aged 45–75 years | 58.1% | 53.7–62.2 |
| Visited dentist or dental clinic in the past year among adults | 49.3% | 46.1–52.4 |
| Mammography use among women aged 50-74 years | 71.3% | 64.3–77.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 17.6% | 14.6–20.8 |
| Current cigarette smoking among adults | 16.9% | 14.7–19.1 |
| No leisure-time physical activity among adults | 30.2% | 25.8–34.6 |
| Short sleep duration among adults | 40.9% | 36.5–45.2 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 24.7% | 21.9–27.5 |
| Frequent mental distress among adults | 19.5% | 17.4–21.6 |
| Frequent physical distress among adults | 15.4% | 13.7–17.1 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 17.8% | 15.9–19.6 |
| Any disability among adults | 34.1% | 30.0–38.2 |
| Hearing disability among adults | 7.2% | 6.4–8.0 |
| Independent living disability among adults | 10.2% | 9.1–11.2 |
| Mobility disability among adults | 16.0% | 14.1–17.9 |
| Self-care disability among adults | 4.8% | 4.4–5.2 |
| Vision disability among adults | 6.7% | 6.2–7.3 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | TX median (p10–p90) |
|---|---|---|---|
| Poverty rate | 18.9% | 10.6% (3.1–25.8%) n=32,364 | 12.4% (3.5–26.4%) n=1,869 |
| Uninsured 18–64 | 32.0% | 9.0% (1.5–24.3%) n=32,286 | 22.3% (8.2–41.5%) n=1,862 |
| No HS diploma (25+) | 11.9% | 7.9% (1.8–20.7%) n=32,505 | 12.2% (2.5–30.0%) n=1,881 |
| Bachelor's or higher (25+) | 17.1% | 23.3% (9.2–53.6%) n=32,505 | 21.9% (9.0–51.4%) n=1,881 |
| Unemployment rate (16+) | 8.8% | 3.9% (0.0–9.8%) n=32,274 | 4.2% (0.0–9.4%) n=1,865 |
| Households without a vehicle | 1.6% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.8%) n=1,868 |
| Broadband subscription | 93.5% | 89.3% (75.1–97.1%) n=32,322 | 89.2% (75.0–97.3%) n=1,868 |
| Housing cost burden (≥30% income) | 23.5% | 23.7% (10.6–40.0%) n=32,322 | 26.2% (8.8–40.3%) n=1,868 |
| Homeownership rate | 74.2% | 78.7% (51.7–94.0%) n=32,322 | 75.0% (46.4–92.3%) n=1,868 |
| Crowded housing (>1 per room) | 8.6% | 1.3% (0.0–6.3%) n=32,322 | 3.1% (0.0–9.0%) n=1,868 |
| Foreign-born population | 13.3% | 2.6% (0.0–18.6%) n=32,553 | 8.1% (0.1–26.4%) n=1,886 |
| Single-parent households | 44.8% | 53.6% (37.3–74.1%) n=32,087 | 48.5% (34.3–70.6%) n=1,861 |
| Population 65+ | 12.2% | 19.4% (10.8–33.6%) n=32,553 | 16.1% (8.6–30.1%) n=1,886 |
| Median age | 33.3 yr | 42.2 yr (33.0–56.3) n=32,292 | 38.3 yr (30.9–52.3) n=1,866 |
| Median household income | $75,348 | $72,070 ($46,039–$118,707) n=30,318 | $69,983 ($46,006–$112,413) n=1,737 |
| Median home value | $240,700 | $222,200 ($100,300–$579,820) n=30,049 | $210,500 ($97,060–$429,760) n=1,693 |
| Median gross rent | $1,204 | $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 | 74.8 yr ± 0.57 | 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 0.57 years of 74.8, 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