Deerfield at a glance
- Population: 18,884 people, the 128th-largest place among Illinois's 1,294 Census places (US Census Bureau, Vintage 2023).
- 2020 Census base: the 2020 count put the population at 19,190 (US Census Bureau).
- 2020 to 2023 change: a decline of roughly 1.6% between the 2020 count and the 2023 estimate (US Census Bureau).
- Rank among Illinois places: 128th in population of 1,294 places (US Census Bureau).
- Size percentile: it is larger than about 90% of the places in Illinois (US Census Bureau).
- Coordinates: 42.1661 / -87.8525, per the US Census Bureau Gazetteer.
- Nearest larger cities: Highland Park, IL (2 mi); Northbrook, IL (3 mi); Wheeling, IL (4 mi); Lake Forest, IL (5 mi); Buffalo Grove, IL (6 mi) (Census populations, approximate straight-line distance).
- Smaller places close by: Bannockburn, IL (2 mi); Riverwoods, IL (2 mi); Highwood, IL (3 mi) (US Census Bureau).
What a personal loan costs in Deerfield
A personal loan is structured as an installment plan, with a set number of monthly payments and a fixed amount due each time.
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.
Work out the payment you can comfortably carry each month first, then borrow no more than that figure supports.
Illinois lending rules that apply in Deerfield
Each row below is a Illinois rule with its publisher and the date it was retrieved.
| Rule | Detail | Source |
|---|---|---|
| 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 |
| 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 |
How to compare offers in Deerfield
Run through this list before signing anything in Deerfield:
- 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.