Prosser at a glance
- Population: about 6,366 residents, ranking 118th of 281 Census places in Washington (US Census Bureau, Vintage 2023 subcounty estimate).
- 2020 Census base: 6,129 people at the 2020 Census, the baseline for the trend below (US Census Bureau).
- 2020 to 2023 change: an increase of about 3.9% since the 2020 count (US Census Bureau).
- Rank among Washington places: 118th in population of 281 places (US Census Bureau).
- Size percentile: it exceeds roughly 58% of Washington's Census places by population (US Census Bureau).
- Coordinates: 46.2090 latitude, -119.7678 longitude (US Census Bureau Gazetteer).
- Nearest larger cities (within 120 miles): Grandview, WA (7 mi); Sunnyside, WA (14 mi); West Richland, WA (20 mi); Richland, WA (23 mi); Kennewick, WA (28 mi) (US Census Bureau populations).
- Nearest smaller communities: Mabton, WA (11 mi); Benton City, WA (14 mi); Granger, WA (22 mi), each a US Census place.
What a personal loan costs in Prosser
Unlike a revolving credit card, a personal loan is closed-end: the balance falls on a fixed schedule and the payment does not change.
The number to compare is the APR, not the interest rate, because the APR folds in origination fees and other charges; our personal loan calculator will show what a given amount and term would cost.
A longer repayment period spreads the cost and increases the interest paid, so compare total cost, not just the monthly figure.
Pre-qualification is a good first filter: it shows the rate and amount a lender may offer before you agree to a full application and a hard inquiry.
Washington lending rules that apply in Prosser
Each row below is a Washington rule with its publisher and the date it was retrieved.
| Rule | Detail | Source |
|---|---|---|
| State lending regulator | Washington State Department of Financial Institutions (DFI) Source says: DFI licenses and regulates financial institutions and service providers in Washington. | Washington State Department of Financial Institutions (DFI) as of 2026-09-16 |
| Maximum legal interest rate (usury cap) | 12% per annum, or four points above the Federal Reserve bill rate, whichever is higher (RCW 19.52.020) Source says: any rate of interest shall be legal so long as the rate of interest does not exceed the higher of: (a) Twelve percent per annum | Washington State Legislature (RCW) as of 2026-09-16 |
| Payday lending status | Licensed; small loans capped at $700 or 30% of monthly income, max 45 days, fees 15% on first $500 and 10% above (RCW 31.45) Source says: Payday lenders must be licensed by DFI — including online lenders that do business with Washington residents. | Washington State Department of Financial Institutions (DFI) as of 2026-09-16 |
| Small-loan / installment lender licensing | Consumer Loan Company license required (Consumer Loan Act, RCW 31.04.035) Source says: No person may engage in any activity subject to this chapter without first obtaining and maintaining a license in accordance with this chapter. | Washington State Legislature (RCW) as of 2026-09-16 |
How to compare offers in Prosser
The steps below are worth completing first when you borrow in Prosser:
- 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 Washington using the regulator named above.
- Read the disclosure for origination fees and any prepayment penalty before you sign.