How do I calculate a Fontana trip total?

Use the GSA per diem calculator with California and this ZIP or locality selected. Lodging is per night; M&IE is 100% on full days and 75% on the first and last calendar days.

Fontana per diem rates

Q: What is the GSA per diem rate for Fontana?

GSA does not list Fontana as its own key city. ZIP 92331 maps to Barstow: $86 M&IE and peak lodging $124.

Imperial County · ZIP 92331 · FY 2026

Official travel to Fontana in Imperial County (sample ZIP 92331) is not its own GSA key city. GSA maps this ZIP to the Barstow high-cost locality : $86 M&IE and peak lodging $124.

First and last travel days use 75% of M&IE ($64.5). Lodging is a monthly maximum (before tax). Statewide default CONUS is $110 lodging + $68 M&IE when no higher locality applies.

Assigned M&IE: $86
Peak lodging: $124

Calculate Fontana per diem Barstow monthly table

Example: 3-night trip in Fontana

Four travel days at the assigned Barstow caps: two at 75% M&IE and two at 100%, plus three nights at peak lodging $124.

Lodging: 3 × $124 = $372
M&IE: 2 × $64.5 + 2 × $86 = $301
Estimated total: $673

Frequently asked questions

What is the GSA per diem rate for Fontana?

GSA does not publish a separate key-city rate named Fontana. ZIP 92331 maps to Barstow: $86 M&IE and peak lodging $124.

How do I calculate a trip to Fontana?

Open the GSA calculator with this locality selected, or enter ZIP 92331. First and last days are 75% of M&IE.

Other cities in Imperial County

Nearby California high-cost localities

Planning aid only · ZIP maps to a GSA destination ID · Methodology