Big Rock at a glance
- Population: a Census-estimated 1,084, placing it 629th among Illinois's 1,294 places (Vintage 2023 subcounty estimate).
- 2020 Census base: 1,107 residents at the 2020 Census (US Census Bureau, 2020 count).
- 2020 to 2023 change: down roughly 2.1% across the 2020-to-2023 comparison (US Census Bureau).
- Rank among Illinois places: the 629th-largest of 1,294 (US Census Bureau, 2023 estimate).
- Size percentile: it is larger than about 51% of the places in Illinois (US Census Bureau).
- Coordinates: it sits at 41.7668, -88.5264 in the US Census Bureau Gazetteer.
- Nearest larger cities within 120 miles: Sugar Grove, IL (4 mi); Hinckley, IL (6 mi); Plano, IL (6 mi); Yorkville, IL (9 mi); Elburn, IL (9 mi) (US Census Bureau).
- Nearest smaller communities: Kaneville, IL (5 mi); Millbrook, IL (11 mi); Virgil, IL (13 mi), each a US Census place.
What a personal loan costs in Big Rock
Most personal loans are unsecured, meaning no collateral is pledged, and they are repaid in equal installments over a fixed term.
Compare every quote on APR because it includes the fees the interest rate hides, and check the payment with our personal loan calculator.
The term is the lever: extend it and the payment falls while total interest climbs; shorten it and the reverse happens.
A payment that strains the budget is a warning sign; a smaller loan or a little more saving time is the safer route.
Illinois lending rules that apply in Big Rock
Every figure in the table below is sourced to a publisher with a date; where a state does not publish a number, we say so rather than estimate.
| Rule | Detail | Source |
|---|---|---|
| State lending regulator | Illinois Department of Financial and Professional Regulation (IDFPR), Division of Financial Institutions Source says: "DFI licenses, charters, and examines a wide variety of financial products and services including: Consumer and Sales Finance and Collection Agencies". | Illinois Department of Financial and Professional Regulation as of 2026-09-16 |
| Installment lender net-worth requirement | $30,000 minimum positive net worth (plus $25,000 surety bond) Source says: "every applicant shall prove ... that the applicant has and will maintain a positive net worth of a minimum of $30,000". | Illinois General Assembly (Illinois Compiled Statutes) as of 2026-09-16 |
| Maximum legal interest rate (usury cap) | 9% annual percentage rate (general written-contract interest cap) Source says: "it shall be lawful for the parties to stipulate or agree that an annual percentage rate of 9%, or any less sum". | Illinois General Assembly (Illinois Compiled Statutes) as of 2026-09-16 |
| Payday lending status | Permitted under license; capped at 36% annual percentage rate (payday loans) Source says: "shall not contract for or receive a charge exceeding a 36% annual percentage rate ... for a payday loan". | Illinois General Assembly (Illinois Compiled Statutes) as of 2026-09-16 |
| Small-loan / installment lender licensing | Consumer Installment Loan Act license required from the Director of Financial Institutions (loans above 9% APR) Source says: "No person ... shall engage in the business of making loans of money ... except ... after first obtaining a license from the Director of Financial Institutions". | Illinois General Assembly (Illinois Compiled Statutes) as of 2026-09-16 |
How to compare offers in Big Rock
Before you commit to a personal loan in Big Rock, work through these steps:
- Pull your free credit reports and dispute any error — it is the cheapest way to improve the rate you are offered.
- Run your figures through the personal loan calculator on this site so you know the payment before a lender quotes one.
- Pre-qualify with at least three lenders and compare the APR, not the interest rate.
- Check that the lender is licensed in Illinois using the regulator named above.
- Read the disclosure for origination fees and any prepayment penalty before you sign.