ZIP code
06401
in Ansonia, ConnecticutPopulation 19,315
55.62/ 100
Ranked #8,719 of 32,066 US ZIPs (top 27%)
Ranked #214 of 277 Connecticut ZIPs (bottom 23%)
Ranked #27 of 41 New Haven-Milford, CT 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.
PFAS in drinking water
91.4%
in the top 0.3% nationally
Lower is healthier
ST98thUS99thDefinition & 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 ›Expected annual disaster loss
$0
at the national minimum
Lower is healthier
ST1stUS1stDefinition & 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 ›Fatal road crashes
1.6 per 100,000 residents per year
in the bottom 5.6% nationally
Lower is healthier
ST6thUS6thDefinition & 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 ›PFOA in drinking water
96.1%
in the top 5.9% nationally
Lower is healthier
ST83rdUS94thDefinition & source ›
The share of residents served by public water systems where PFOA, one of the man-made “forever chemicals,” was detected in EPA testing.
Measured from EPA records for the public water systems that serve this ZIP. Households on private wells — roughly 30% of the US population — are not covered by this measure, and this figure says nothing about their water.
Full methodology ›PFOS in drinking water
96.1%
in the top 6.2% nationally
Lower is healthier
ST83rdUS94thDefinition & source ›
The share of residents served by public water systems where PFOS, one of the most common “forever chemicals,” was detected in EPA testing.
Measured from EPA records for the public water systems that serve this ZIP. Households on private wells — roughly 30% of the US population — are not covered by this measure, and this figure says nothing about their water.
Full methodology ›Park land
18%
in the top 7.7% nationally
Higher is healthier
ST95thUS92ndDefinition & source ›
The share of this ZIP’s land area that is public parkland.
Full methodology ›Lead in tap water
0.0000026 ppb
in the bottom 9.1% nationally
Lower is healthier
US9thDefinition & source ›
The lead level at the 90th percentile of tap-water samples reported by the public water systems serving this ZIP, in parts per billion — the EPA requires action above 15 ppb.
Measured from EPA records for the public water systems that serve this ZIP. Households on private wells — roughly 30% of the US population — are not covered by this measure, and this figure says nothing about their water.
Full methodology ›Arsenic in groundwater
13.3%
in the top 11.8% nationally
Lower is healthier
ST96thUS88thDefinition & source ›
The modeled probability that untreated groundwater in this area — the source private wells draw on — exceeds the federal arsenic limit of 10 micrograms per liter.
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 ›Fine-particle (PM2.5) exceedance
0.55%
in the top 14.9% nationally
Lower is healthier
ST99thUS85thDefinition & source ›
The share of days in the year when modeled fine-particle (PM2.5) pollution was above the EPA’s daily limit of 35 micrograms per cubic meter.
Full methodology ›The read
Judged by its overall standing, Ansonia, Connecticut (ZIP 06401) sits in the top 27% healthiest ZIPs nationally (8,719th) and the bottom 23% of Connecticut (214th).
A balanced showing across the data, with a few readings each side: modeled expected annual loss resides at the national minimum, fatal road crashes sits in the bottom 5.6% nationally, and park land stands in the top 7.7% nationally. Lead in tap water resides in the bottom 9.1% nationally. Modeled extreme heat sits at the national minimum, shared with about 19% of ZIPs. Mental-health providers stands in the top 10.2% nationally. Distance to a community health center resides at the national minimum, shared with about 23% of ZIPs. On the other hand, modeled pfas sits in the top 0.3% nationally, and PFOA in drinking water stands in the top 5.9% nationally. PFOS in drinking water resides in the top 6.2% nationally.
Placed beside its immediate neighbors, park land runs far higher than the surrounding ZIPs on this measure. Put plainly, 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. Expected annual loss is FEMA's modeled estimate, in dollars, of average yearly harm to people from natural hazards. PFOA in drinking water is one of the man-made "forever chemicals" that build up in the body and environment instead of breaking down. A healthier nearby ZIP overall is ZIP 06483, 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 New Haven-Milford, CT 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 72%
21%
Preventive Care
healthier than 66%
13%
Mental Health
healthier than 62%
8%
Disability
healthier than 76%
7%
Climate / Disaster Risk
healthier than 76%
5%
Healthcare Access
healthier than 73%
5%
About typical
Risk Behavior
healthier than 52%
11%
Holding it back
Social Need / SDOH
healthier than 32%
16%
Environmental Hazard
healthier than 27%
14%
Lifting this score
Climate / Disaster Risk
healthier than 71%
5%
About typical
Chronic Disease Burden
healthier than 50%
21%
Healthcare Access
healthier than 47%
5%
Holding it back
Social Need / SDOH
healthier than 17%
16%
Environmental Hazard
healthier than 40%
14%
Preventive Care
healthier than 21%
13%
Risk Behavior
healthier than 22%
11%
Mental Health
healthier than 38%
8%
Disability
healthier than 31%
7%
Lifting this score
Environmental Hazard
healthier than 81%
14%
About typical
Chronic Disease Burden
healthier than 47%
21%
Climate / Disaster Risk
healthier than 56%
5%
Holding it back
Social Need / SDOH
healthier than 36%
16%
Preventive Care
healthier than 36%
13%
Risk Behavior
healthier than 33%
11%
Mental Health
healthier than 39%
8%
Disability
healthier than 36%
7%
Healthcare Access
healthier than 25%
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
2 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 76.4 ± 1.6 years. A median household income of $86,178 predicts 79.5 years — 3.1 years below.
Ranked #4,230 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 76.4 ± 1.6 years. The 48 nearest ZIP codes with estimates average 80.4 years — 4.0 years below them.
Ranked #2,999 of the 3,687 ZIP codes this finding names, ordered by years above the nearby-ZIP average, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
06418
Connecticutshares a border
Score 55.54
Closest healthier
06483
Connecticutshares a border
Score 60.12
Similar health profile
15227
Pennsylvania97% similar profile
Score 54.69
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 | 24.5% | 22.4–26.7 |
| High blood pressure among adults | 32.5% | 29.9–35.2 |
| Cancer (non-skin) or melanoma among adults | 7.7% | 7.0–8.3 |
| Current asthma among adults | 11.1% | 10.0–12.3 |
| Coronary heart disease among adults | 5.8% | 5.2–6.3 |
| Chronic obstructive pulmonary disease among adults | 5.8% | 5.2–6.6 |
| Depression among adults | 21.0% | 18.7–23.5 |
| Diagnosed diabetes among adults | 10.2% | 9.1–11.4 |
| High cholesterol among adults who have ever been screened | 38.0% | 35.2–40.9 |
| Obesity among adults | 34.7% | 30.3–39.3 |
| Stroke among adults | 3.2% | 2.9–3.4 |
| All teeth lost among adults aged >=65 years | 12.9% | 10.9–15.4 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 10.9% | 9.4–12.5 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 74.1% | 71.5–76.7 |
| Visits to doctor for routine checkup within the past year among adults | 79.2% | 76.7–81.7 |
| Cholesterol screening among adults | 88.8% | 87.4–90.1 |
| Colorectal cancer screening among adults aged 45–75 years | 71.2% | 68.0–74.5 |
| Visited dentist or dental clinic in the past year among adults | 65.5% | 62.7–68.4 |
| Mammography use among women aged 50-74 years | 77.2% | 72.3–82.0 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 15.2% | 13.3–17.4 |
| Current cigarette smoking among adults | 12.1% | 10.5–13.9 |
| No leisure-time physical activity among adults | 27.6% | 24.5–30.9 |
| Short sleep duration among adults | 39.0% | 35.1–43.2 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 16.7% | 15.0–18.7 |
| Frequent mental distress among adults | 16.9% | 15.3–18.7 |
| Frequent physical distress among adults | 13.2% | 11.9–14.7 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 13.3% | 12.0–14.8 |
| Any disability among adults | 26.6% | 24.0–29.5 |
| Hearing disability among adults | 5.7% | 5.0–6.3 |
| Independent living disability among adults | 7.2% | 6.5–8.0 |
| Mobility disability among adults | 11.8% | 10.5–13.3 |
| Self-care disability among adults | 3.5% | 3.2–3.9 |
| Vision disability among adults | 4.8% | 4.4–5.3 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 27.2% | 24.3–30.2 |
| Food insecurity in the past 12 months among adults | 15.5% | 13.5–17.5 |
| Received food stamps in the past 12 months among adults | 11.9% | 10.2–13.6 |
| Housing insecurity in the past 12 months among adults | 14.6% | 12.9–16.4 |
| Lack of reliable transportation in the past 12 months among adults | 8.7% | 7.7–9.7 |
| Loneliness among adults | 35.5% | 32.1–39.0 |
| Utility services shut-off threat in the past 12 months among adults | 9.3% | 8.1–10.5 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CT median (p10–p90) |
|---|---|---|---|
| Poverty rate | 9.3% | 10.6% (3.1–25.8%) n=32,364 | 5.8% (2.3–20.8%) n=278 |
| Uninsured 18–64 | 11.2% | 9.0% (1.5–24.3%) n=32,286 | 4.5% (1.2–12.9%) n=277 |
| No HS diploma (25+) | 10.5% | 7.9% (1.8–20.7%) n=32,505 | 4.6% (1.1–14.3%) n=278 |
| Bachelor's or higher (25+) | 22.3% | 23.3% (9.2–53.6%) n=32,505 | 43.6% (19.2–70.7%) n=278 |
| Unemployment rate (16+) | 9.0% | 3.9% (0.0–9.8%) n=32,274 | 4.4% (1.6–9.1%) n=277 |
| Households without a vehicle | 6.7% | 3.9% (0.0–12.5%) n=32,322 | 4.1% (0.0–13.7%) n=278 |
| Broadband subscription | 91.6% | 89.3% (75.1–97.1%) n=32,322 | 93.7% (86.9–98.8%) n=278 |
| Housing cost burden (≥30% income) | 35.8% | 23.7% (10.6–40.0%) n=32,322 | 29.3% (18.2–44.9%) n=278 |
| Homeownership rate | 58.3% | 78.7% (51.7–94.0%) n=32,322 | 80.1% (41.3–93.1%) n=278 |
| Crowded housing (>1 per room) | 2.6% | 1.3% (0.0–6.3%) n=32,322 | 0.7% (0.0–3.8%) n=278 |
| Foreign-born population | 20.1% | 2.6% (0.0–18.6%) n=32,553 | 9.3% (2.1–22.3%) n=278 |
| Single-parent households | 43.2% | 53.6% (37.3–74.1%) n=32,087 | 51.1% (36.0–68.7%) n=277 |
| Population 65+ | 18.4% | 19.4% (10.8–33.6%) n=32,553 | 19.8% (13.4–30.2%) n=278 |
| Median age | 40.0 yr | 42.2 yr (33.0–56.3) n=32,292 | 44.1 yr (34.7–53.2) n=278 |
| Median household income | $86,178 | $72,070 ($46,039–$118,707) n=30,318 | $107,247 ($63,371–$163,278) n=270 |
| Median home value | $285,800 | $222,200 ($100,300–$579,820) n=30,049 | $365,900 ($239,080–$622,060) n=268 |
| Median gross rent | $1,476 | $1,021 ($677–$1,912) n=25,670 | $1,450 ($1,128–$2,175) n=247 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | CT median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 76.4 yr ± 0.80 | 78.9 yr (74.7–82.8) n=31,308 | 81.2 yr (77.7–83.5) n=266 |
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 0.80 years of 76.4, 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