Wonder Lake at a glance
- Population: about 4,889, 333rd by size in Illinois of 1,294 places (Census Vintage 2023 subcounty estimate).
- 2020 Census base: 3,973 residents (US Census Bureau, 2020 Census).
- 2020 to 2023 change: an increase of about 23.1% since the 2020 count (US Census Bureau).
- Rank among Illinois places: 333rd of the state's 1,294 Census places (US Census Bureau).
- Size percentile: ahead of around 74% of Illinois places in population terms (US Census Bureau).
- Coordinates: the Census Gazetteer places it at 42.3834, -88.3500.
- Nearest larger cities (120-mile radius): McHenry, IL (4 mi); Johnsburg, IL (5 mi); Woodstock, IL (7 mi); Spring Grove, IL (7 mi); Lakemoor, IL (8 mi) (US Census Bureau).
- Nearest smaller towns: Greenwood, IL (2 mi); Ringwood, IL (3 mi); McCullom Lake, IL (3 mi) — US Census Bureau populations.
What a personal loan costs in Wonder Lake
Personal loans are installment credit — one lump sum, repaid in equal monthly installments across a fixed term you agree to up front.
The advertised interest rate leaves out fees that the APR captures, which is why APR is the number to weigh; try the personal loan calculator before you apply.
Your credit, income and existing debts drive the rate a lender offers, while the term you pick sets how much interest builds on top.
Shop with more than one lender and treat pre-qualification as an estimate, since the final terms follow a full application.
Illinois lending rules that apply in Wonder Lake
The table lists the Illinois rules that apply to a loan made in Wonder Lake, each with the regulator that published it.
| Rule | Detail | Source |
|---|---|---|
| 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 |
| 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 |
How to compare offers in Wonder Lake
These steps are the ones that most affect the offer you receive in Wonder Lake:
- 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.