Petaluma at a glance
- Population: the Census estimates 58,800 residents, ranking 153rd of 482 places in California (Vintage 2023).
- 2020 Census base: the 2020 Census recorded 59,785 residents here (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 California places: the 153rd-largest of 482 (US Census Bureau, 2023 estimate).
- Size percentile: roughly 68% of places in California rank below it by population (US Census Bureau).
- Coordinates: 38.2423, -122.6288 (US Census Bureau Gazetteer).
- Nearest larger cities within 120 miles: Santa Rosa, CA (15 mi); Napa, CA (18 mi); San Rafael, CA (19 mi); Vallejo, CA (22 mi); Richmond, CA (25 mi) (US Census Bureau).
- Smaller places nearby: Cotati, CA (7 mi); Rohnert Park, CA (8 mi); Sonoma, CA (10 mi), per US Census Bureau estimates.
What a personal loan costs in Petaluma
Personal loans are installment credit — one lump sum, repaid in equal monthly installments across a fixed term you agree to up front.
Two loans can share an interest rate and still differ in APR once fees are counted, so compare APR; our personal loan calculator shows the difference over the full term.
Stretching the term lowers the monthly payment but raises the total interest you pay, so the smallest payment is not automatically the cheapest loan.
Work out the payment you can comfortably carry each month first, then borrow no more than that figure supports.
California lending rules that apply in Petaluma
The table lists the California rules that apply to a loan made in Petaluma, each with the regulator that published it.
| Rule | Detail | Source |
|---|---|---|
| Small-loan / installment lender licensing | Finance lender/broker license required from the Commissioner of Financial Protection and Innovation (California Financing Law) Source says: "No person shall engage in the business of a finance lender or broker without obtaining a license from the commissioner". | California Legislature — Financial Code § 22100 as of 2026-09-16 |
| State lending regulator | California Department of Financial Protection and Innovation (DFPI) Source says: "“Department” means the Department of Financial Protection and Innovation". | California Legislature — Financial Code § 23001 as of 2026-09-16 |
| 36% rate cap on mid-size consumer loans (AB 539) | Consumer loans of $2,500 to under $10,000: cap of 36% per annum simple interest plus the Federal Funds Rate Source says: "charges at a rate not exceeding an annual simple interest rate of 36 percent per annum plus the Federal Funds Rate". | California Legislature — Financial Code § 22304.5 as of 2026-09-16 |
| Maximum legal interest rate (usury cap) | 7% per annum default; written contracts may set up to 10% per annum for consumer-purpose loans Source says: "shall be 7 percent per annum"; "for use primarily for personal, family, or household purposes, at a rate not exceeding 10 percent per annum". | California Legislature — California Constitution, Article XV, § 1 as of 2026-09-16 |
| Payday lending status | Permitted under the California Deferred Deposit Transaction Law; max $300 face amount; fee ≤15%; term up to 31 days Source says: "The face amount of the check shall not exceed three hundred dollars ($300)"; "A fee for a deferred deposit transaction shall not exceed 15 percent of the face amount of the check" (Financial Code § 23036). | California Legislature — Financial Code § 23035 (and § 23036) as of 2026-09-16 |
How to compare offers in Petaluma
Run through this list before signing anything in Petaluma:
- 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 California using the regulator named above.
- Read the disclosure for origination fees and any prepayment penalty before you sign.