CSV batch lookup
UTF-8 CSV with a zip column; up to 1 MB / 1,000 rows. Files are processed for this request, not saved. Import ZIP columns as text in spreadsheets to retain leading zeros.
CSV · ZIP codes
zip 00501 92337 10001
ACS indicators use the period shown. Population filters use Census 2020 ZCTAs. Missing and open-ended values are excluded from numeric filtering; postal points are not delivery boundaries.