Waterloo at a glance
- Population: 11,144 — 204th in Illinois, which has 1,294 Census places (US Census Bureau, Vintage 2023).
- 2020 Census base: the 2020 count put the population at 11,013 (US Census Bureau).
- 2020 to 2023 change: up about 1.2% from the 2020 Census base to the 2023 estimate (US Census Bureau).
- Rank among Illinois places: 204th largest of 1,294 (US Census Bureau).
- Size percentile: it is larger than about 84% of the places in Illinois (US Census Bureau).
- Coordinates: 38.3412 latitude, -90.1527 longitude (US Census Bureau Gazetteer).
- Nearest larger cities (within 120 miles): Arnold, MO (13 mi); Belleville, IL (15 mi); Cahokia Heights, IL (16 mi); Festus, MO (16 mi); Swansea, IL (17 mi) (US Census Bureau populations).
- Smaller towns nearby: Valmeyer, IL (8 mi); Columbia, IL (9 mi); Maeystown, IL (9 mi) (US Census Bureau).
What a personal loan costs in Waterloo
Personal loans are installment credit — one lump sum, repaid in equal monthly installments across a fixed term you agree to up front.
Judge an offer by its APR, which blends the interest rate with fees, and use the personal loan calculator to see the total cost.
A longer repayment period spreads the cost and increases the interest paid, so compare total cost, not just the monthly figure.
Set the loan amount from the expense itself rather than the maximum you are approved for, and keep the payment within your existing budget.
Illinois lending rules that apply in Waterloo
The table lists the Illinois rules that apply to a loan made in Waterloo, each with the regulator that published it.
| Rule | Detail | Source |
|---|---|---|
| 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 |
| 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 |
How to compare offers in Waterloo
Before you commit to a personal loan in Waterloo, 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.