BAH by ZIP Code Calculator
Estimate Basic Allowance for Housing (BAH) using a ZIP code, pay grade, and dependent status. ZIPs are mapped to simplified cost buckets for planning.
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Formula
This tool infers a cost bucket from the ZIP and then looks up an illustrative monthly rate by pay grade and dependency status.
Worked Example
How ZIP Codes Affect BAH Rates
- ZIP codes in major metro areas typically fall into high-cost buckets with significantly higher BAH rates
- Rural and smaller city ZIP codes generally map to low or medium cost areas
- The same pay grade can receive very different BAH amounts depending on duty station ZIP code
- Official BAH uses detailed MHA boundaries, so this simplified ZIP mapping is for planning purposes only
Compare multiple ZIP codes to understand the financial impact of different duty station assignments on your housing budget.
You can also calculate changes using our BAH Calculator, Army BAH Calculator, BAH by ZIP Code Calculator or BAH With Dependents Calculator.
Frequently Asked Questions
How does the ZIP code affect the calculation?
ZIP prefixes map to simplified cost buckets that approximate local housing market conditions. Official BAH uses Military Housing Area boundaries and detailed rate tables.
Can I use this for overseas locations?
This ZIP mapping covers CONUS locations only. For overseas housing allowances (OHA), use location-based official tools through the Defense Travel Management Office.
Why does pay grade matter for BAH?
BAH rates increase with rank to reflect the expectation that higher-ranking service members need more housing. Pay grade selects the correct row in the rate table for your location.
Are neighboring ZIP codes always in the same cost bucket?
Not necessarily. ZIP code boundaries can cross MHA lines, and housing costs can vary significantly between adjacent areas, especially near city and suburban borders.
How often do BAH rates change by ZIP code?
BAH rates are recalculated annually based on rental market surveys. Rates can increase or decrease year over year depending on local housing market conditions.
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