IL
Midwest Region

Illinois

IL

Business Intelligence APIs

Access Illinois Secretary of State data, IDFPR license verification, and complex sales tax. Major market - complete IL coverage.

1.4M
Active Businesses
140K/year
New Formations
1.8%
Annual Growth
48
License Boards

APIs for Illinois

5 integrated data sources covering IL business intelligence

Illinois Business Landscape

Real-time access to IL business formation, verification, and compliance data

1.4M
Registered Businesses
Active business entities on file
140K/year
Annual New Formations
New entities registered yearly
1.8%
Year-over-Year Growth
Business formation growth rate
IL
Illinois
Midwest

Professional License Verification

CHIRON provides comprehensive access to Illinois licensing boards

48
State Licensing Boards

Integrated data sources for professional verification

Full Coverage
Data Coverage Level

Comprehensive Illinois professional data access

<1s
Verification Speed

Real-time license status checks

PLUTUS Sales Tax API

Illinois Sales Tax Complexity

Navigate IL's 1,100 tax jurisdictions with precision. PLUTUS handles state, county, city, and special district rates automatically.

Base State Rate6.25%
Tax Jurisdictions1,100
Rate Lookup Speed<100ms
tax_lookup.py
import plutus

# Get tax rate for Illinois address
rate = plutus.get_rate(
  street="123 Main St",
  city="Chicago",
  state="IL",
  zip="12345"
)

# Response
{
  "combined_rate": 7.75%,
  "state_rate": 6.25%,
  "county_rate": 1.0%,
  "city_rate": 0.5%
}

Major Illinois Metros

Explore detailed business intelligence for IL's largest metropolitan areas

Ready to access Illinois data?

Get started with Olympus APIs and unlock comprehensive IL business intelligence across all 5 integrated data sources.

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