This ranking identifies U.S. ZIP codes with the highest and lowest lead exposure risk. Lead is a neurotoxin with no safe level of exposure. Older housing, lead service lines, and water system violations all contribute to risk.
23,052 ZIP codes analyzed · Worst score: 96/100
25 Worst ZIP Codes
| # | ZIP Code | City | State | Lead Score | Risk Level | Pre-1986 Housing |
|---|---|---|---|---|---|---|
| 1 | 15960 | Twin Rocks | PA | 96/100 | Very High | 93% |
| 2 | 17976 | Shenandoah | PA | 96/100 | Very High | 96% |
| 3 | 18030 | Bowmanstown | PA | 95/100 | Very High | 99% |
| 4 | 45410 | Dayton | OH | 94/100 | Very High | 95% |
| 5 | 15030 | Creighton | PA | 93/100 | Very High | 96% |
| 6 | 15104 | Braddock | PA | 93/100 | Very High | 95% |
| 7 | 45403 | Dayton | OH | 93/100 | Very High | 97% |
| 8 | 62098 | Wrights | IL | 93/100 | Very High | 100% |
| 9 | 62266 | New Memphis | IL | 93/100 | Very High | 100% |
| 10 | 17944 | Llewellyn | PA | 92/100 | Very High | 100% |
| 11 | 45405 | Dayton | OH | 92/100 | Very High | 94% |
| 12 | 53211 | Milwaukee | WI | 92/100 | Very High | 90% |
| 13 | 76955 | Vancourt | TX | 92/100 | Very High | 94% |
| 14 | 13350 | Herkimer | NY | 91/100 | Very High | 90% |
| 15 | 17762 | Picture Rocks | PA | 91/100 | Very High | 90% |
| 16 | 17931 | Frackville | PA | 91/100 | Very High | 92% |
| 17 | 45419 | Dayton | OH | 91/100 | Very High | 95% |
| 18 | 13357 | Ilion | NY | 90/100 | Very High | 88% |
| 19 | 16365 | Warren | PA | 90/100 | Very High | 89% |
| 20 | 45402 | Dayton | OH | 90/100 | Very High | 83% |
| 21 | 45406 | Dayton | OH | 90/100 | Very High | 94% |
| 22 | 76875 | Rowena | TX | 90/100 | Very High | 86% |
| 23 | 10033 | New York | NY | 89/100 | Very High | 96% |
| 24 | 11428 | Queens Village | NY | 89/100 | Very High | 98% |
| 25 | 15943 | Nanty Glo | PA | 89/100 | Very High | 87% |
25 Best ZIP Codes
| # | ZIP Code | City | State | Lead Score | Risk Level | Pre-1986 Housing |
|---|---|---|---|---|---|---|
| 1 | 92350 | Loma Linda | CA | 3/100 | Low | 0% |
| 2 | 89557 | Reno | NV | 3/100 | Low | 0% |
| 3 | 89034 | Mesquite | NV | 3/100 | Low | 1% |
| 4 | 85912 | White Mountain Lake | AZ | 3/100 | Low | 0% |
| 5 | 79699 | Abilene | TX | 3/100 | Low | 0% |
| 6 | 78860 | El Indio | TX | 3/100 | Low | 0% |
| 7 | 75658 | Joinerville | TX | 3/100 | Low | 0% |
| 8 | 71466 | Otis | LA | 3/100 | Low | 0% |
| 9 | 70375 | Mathews | LA | 3/100 | Low | 0% |
| 10 | 40526 | Lexington | KY | 3/100 | Low | 0% |
| 11 | 38677 | University | MS | 3/100 | Low | 0% |
| 12 | 27531 | Goldsboro | NC | 3/100 | Low | 0% |
| 13 | 20889 | Bethesda | MD | 3/100 | Low | 0% |
| 14 | 95835 | Sacramento | CA | 4/100 | Low | 5% |
| 15 | 94158 | San Francisco | CA | 4/100 | Low | 4% |
| 16 | 92694 | Ladera Ranch | CA | 4/100 | Low | 4% |
| 17 | 92602 | Irvine | CA | 4/100 | Low | 3% |
| 18 | 91915 | Chula Vista | CA | 4/100 | Low | 4% |
| 19 | 91914 | Chula Vista | CA | 4/100 | Low | 5% |
| 20 | 85396 | Buckeye | AZ | 4/100 | Low | 3% |
| 21 | 85395 | Goodyear | AZ | 4/100 | Low | 4% |
| 22 | 85388 | Surprise | AZ | 4/100 | Low | 3% |
| 23 | 85379 | Surprise | AZ | 4/100 | Low | 2% |
| 24 | 85297 | Gilbert | AZ | 4/100 | Low | 2% |
| 25 | 85295 | Gilbert | AZ | 4/100 | Low | 4% |
Rankings by State
| State | ZIP Codes |
|---|---|
| Texas | 1,577 |
| California | 1,437 |
| New York | 1,240 |
| Pennsylvania | 1,134 |
| Illinois | 919 |
| Florida | 915 |
| Ohio | 899 |
| Missouri | 843 |
| North Carolina | 725 |
| Kentucky | 718 |
| Michigan | 671 |
| Georgia | 595 |
| Tennessee | 584 |
| Virginia | 567 |
| New Jersey | 545 |
| Oklahoma | 544 |
| Indiana | 521 |
| West Virginia | 516 |
| Alabama | 515 |
| Massachusetts | 466 |
| Minnesota | 464 |
| Wisconsin | 463 |
| Kansas | 447 |
| Iowa | 441 |
| Arkansas | 430 |
Methodology
Lead risk scores combine four factors: percentage of pre-1986 housing (lead paint risk), water system lead testing results (90th percentile), estimated lead service line probability, and EPA water violation history. Scores range from 0 to 100, with higher values indicating greater risk. Data sources: EPA SDWIS, American Community Survey, EPA Lead Service Line Inventory.
Last updated: 2026-08-14.
Frequently Asked Questions
How are these rankings calculated?
Rankings are based on federal agency data including EPA, FEMA, USGS, and PHMSA. Each ZIP code receives a score based on the specific risk factors for this category. See the methodology section above for details.
How often are rankings updated?
Rankings are regenerated quarterly using the latest available data. The date shown reflects the most recent update.
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