How do I calculate a Walnut Creek 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.

Walnut Creek per diem rates

Q: What is the GSA per diem rate for Walnut Creek?

GSA does not list Walnut Creek as its own key city. ZIP 94595 maps to Antioch: $86 M&IE and peak lodging $147.

Contra Costa County · ZIP 94595 · FY 2026

Official travel to Walnut Creek in Contra Costa County (sample ZIP 94595) is not its own GSA key city. GSA maps this ZIP to the Antioch high-cost locality : $86 M&IE and peak lodging $147.

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: $147

Calculate Walnut Creek per diem Antioch monthly table

Example: 3-night trip in Walnut Creek

Four travel days at the assigned Antioch caps: two at 75% M&IE and two at 100%, plus three nights at peak lodging $147.

Lodging: 3 × $147 = $441
M&IE: 2 × $64.5 + 2 × $86 = $301
Estimated total: $742

Frequently asked questions

What is the GSA per diem rate for Walnut Creek?

GSA does not publish a separate key-city rate named Walnut Creek. ZIP 94595 maps to Antioch: $86 M&IE and peak lodging $147.

How do I calculate a trip to Walnut Creek?

Open the GSA calculator with this locality selected, or enter ZIP 94595. First and last days are 75% of M&IE.

Other cities in Contra Costa County

Nearby California high-cost localities

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