San Luis at a glance
- Population: a Census-estimated 37,966, placing it 27th among Arizona's 91 places (Vintage 2023 subcounty estimate).
- 2020 Census base: 35,281 residents in the 2020 Census, per the US Census Bureau.
- 2020 to 2023 change: a gain of roughly 7.6% between the 2020 count and the 2023 estimate (US Census Bureau).
- Rank among Arizona places: 27th by size among 91 communities (US Census Bureau).
- Size percentile: ahead of around 70% of Arizona places in population terms (US Census Bureau).
- Coordinates: mapped at 32.4857, -114.7219 by the US Census Bureau Gazetteer.
- Nearest larger cities: Yuma, AZ (12 mi); Calexico, CA (47 mi); El Centro, CA (53 mi); Coachella, CA (117 mi) (Census populations, approximate straight-line distance).
- Smaller places nearby: Somerton, AZ (8 mi); Wellton, AZ (31 mi); Holtville, CA (44 mi), per US Census Bureau estimates.
What a personal loan costs in San Luis
With an installment loan the payment is fixed for the life of the loan, so the schedule is predictable from the first month to the last.
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.
Choosing a longer term eases the monthly budget but adds interest over the life of the loan; a shorter term costs more per month and less overall.
If you are consolidating debt, the loan only helps if you stop adding to the balances it clears; otherwise the total debt grows.
Arizona lending rules that apply in San Luis
The table lists the Arizona rules that apply to a loan made in San Luis, each with the regulator that published it.
| Rule | Detail | Source |
|---|---|---|
| Maximum legal interest rate (usury cap) | 10% per year default; any rate may be agreed in writing (other than medical debt) Source says: "interest shall be at the rate of ten percent a year, unless a different rate is contracted for in writing". | Arizona State Legislature — A.R.S. § 44-1201 as of 2026-09-16 |
| Payday lending status | Not permitted — payday lending authorization expired June 30, 2010; DIFI no longer licenses payday lenders; consumer loans over 36% APR illegal since July 1, 2010 Source says: "The law allowing payday loans in Arizona expired on June 30, 2010. DIFI no longer licenses payday lenders." | Arizona Department of Insurance and Financial Institutions (DIFI) as of 2026-09-16 |
| Small-loan / installment lender licensing | Consumer lender license required from the deputy director (A.R.S. Title 6, Chapter 5); at least $25,000 in assets readily available per licensed office; license not transferable Source says: "shall not engage in the business of a consumer lender without first being licensed as a consumer lender". | Arizona State Legislature — A.R.S. § 6-603 as of 2026-09-16 |
| State lending regulator | Arizona Department of Insurance and Financial Institutions (DIFI) Source says: "The Arizona Department of Insurance and Financial Institutions (DIFI)". | Arizona Department of Insurance and Financial Institutions (DIFI) as of 2026-09-16 |
| Consumer lender loan rate caps (§ 6-632) | Consumer loans: 36% per year on principal up to $3,000; for larger loans, 36% on the first $3,000 and 24% above $3,000 Source says: "a consumer loan rate of thirty-six per cent"; "a consumer loan rate of twenty-four per cent on that part of the principal amount greater than three thousand dollars". | Arizona State Legislature — A.R.S. § 6-632 as of 2026-09-16 |
How to compare offers in San Luis
A few practical steps will make the process in San Luis less costly:
- 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 Arizona using the regulator named above.
- Read the disclosure for origination fees and any prepayment penalty before you sign.