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Troy is the #168 city in Illinois by population, with a population of 70,118 across 4 ZIP codes. Average temperatures range from 46.4°F to 66.4°F, with 42.0" of annual precipitation. The local economy is anchored by Healthcare, with 230 establishments.
Average monthly temperatures and precipitation.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg High | 40° | 45° | 56° | 68° | 76° | 85° | 88° | 87° | 81° | 69° | 56° | 44° |
| Avg Low | 23° | 26° | 35° | 45° | 56° | 65° | 69° | 66° | 58° | 47° | 36° | 28° |
| Precip | 2.5" | 2.3" | 3.4" | 4.8" | 5.2" | 3.9" | 3.9" | 3.5" | 3.4" | 3.0" | 3.5" | 2.5" |
| Snow | 0.8" | 0.8" | 0.2" | - | - | - | - | - | - | - | 0.1" | 0.7" |
| Industry | Establishments |
|---|---|
| Health care and social assistance | 230 |
| Other services (except public administration) | 174 |
| Retail trade | 171 |
| Construction | 149 |
| Professional, scientific, and technical services | 144 |
| Accommodation and food services | 132 |
| Finance and insurance | 115 |
| Administrative and support and waste management and remediation services | 83 |
| Real estate and rental and leasing | 53 |
| Wholesale trade | 46 |
Troy has 2 properties listed on the National Register of Historic Places, including:
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