How do I calculate a Greenbrae 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.

Greenbrae per diem rates

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

GSA does not list Greenbrae as its own key city. ZIP 94904 maps to Mill Valley: $92 M&IE and peak lodging $175.

Marin County · ZIP 94904 · FY 2026

Official travel to Greenbrae in Marin County (sample ZIP 94904) is not its own GSA key city. GSA maps this ZIP to the Mill Valley high-cost locality : $92 M&IE and peak lodging $175.

First and last travel days use 75% of M&IE ($69). Lodging is a monthly maximum (before tax). Statewide default CONUS is $110 lodging + $68 M&IE when no higher locality applies.

Assigned M&IE: $92
Peak lodging: $175

Calculate Greenbrae per diem Mill Valley monthly table

Example: 3-night trip in Greenbrae

Four travel days at the assigned Mill Valley caps: two at 75% M&IE and two at 100%, plus three nights at peak lodging $175.

Lodging: 3 × $175 = $525
M&IE: 2 × $69 + 2 × $92 = $322
Estimated total: $847

Frequently asked questions

What is the GSA per diem rate for Greenbrae?

GSA does not publish a separate key-city rate named Greenbrae. ZIP 94904 maps to Mill Valley: $92 M&IE and peak lodging $175.

How do I calculate a trip to Greenbrae?

Open the GSA calculator with this locality selected, or enter ZIP 94904. First and last days are 75% of M&IE.

Other cities in Marin County

Nearby California high-cost localities

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