Check any address in Seneca, Illinois for deliverability. Get instant verification with confidence scores.
Seneca is the #328 city in Illinois by population, with a population of 31,487 across 3 ZIP codes. Average temperatures range from 39.8°F to 60.3°F, with 38.9" of annual precipitation. Retail leads the business landscape, accounting for 119 of the area's establishments.
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Verify Seneca AddressAverage monthly temperatures and precipitation.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg High | 31° | 35° | 48° | 61° | 72° | 81° | 84° | 82° | 77° | 64° | 49° | 37° |
| Avg Low | 15° | 18° | 28° | 38° | 49° | 59° | 63° | 61° | 54° | 42° | 31° | 21° |
| Precip | 2.0" | 1.9" | 2.4" | 3.5" | 4.6" | 4.9" | 4.2" | 4.1" | 3.5" | 3.2" | 2.6" | 2.1" |
| Snow | 8.1" | 7.4" | 2.9" | 0.4" | - | - | - | - | - | - | 0.9" | 5.3" |
| Industry | Establishments |
|---|---|
| Retail trade | 119 |
| Other services (except public administration) | 107 |
| Health care and social assistance | 95 |
| Accommodation and food services | 78 |
| Construction | 75 |
| Professional, scientific, and technical services | 70 |
| Finance and insurance | 44 |
| Manufacturing | 41 |
| Transportation and warehousing | 40 |
| Wholesale trade | 37 |
Seneca has 1 properties listed on the National Register of Historic Places, including:
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