Geocodio is cheaper per address and keeps past census years, and 1Lookup returns the tract and its districts as one flat $0.010 lookup.

Geocoding and reverse geocoding for addresses in the United States, Canada and Mexico on pay-as-you-go, with the UK on its subscription plans, plus data fields appended to the result: congressional districts with legislator information, state legislative districts, school districts, census geographies for every census year back to 2010, American Community Survey demographic, economic, family, housing and social data, ZIP+4 and timezone. It has a batch endpoint of up to 10,000 lookups a request and a lists API for spreadsheets.

One address or coordinate lookup is one credit, and each additional data append is one more credit. The first 2,500 credits used per day are free, and after that pay-as-you-go is $1 per 1,000. Flex subscriptions start at $325 a month for 350,000 credits, with $250 a month for each extra user, and Unlimited, a dedicated instance, starts at $1,350 a month. Pay-as-you-go covers the US, Canada and Mexico only and has a rate limit of 1,000 lookups a minute. Checked October 2026.

2 credits per address matched, free when the address is not matched. On the Starter plan ($99 a month for 20,000 credits) a lookup is about $0.010, which covers 10,000 addresses a month and is $9.90 per 1,000. At the Enterprise end of the rate card it is about $0.004. Geocodio is the cheaper bill per address: its free daily allowance comes first, and a tract with its districts is about $4 per 1,000 addresses beyond it, against $99 for a Starter month.

Each address is one lookup and each field append is one more per address. The documentation gives the formula as Total Lookups = Number of Addresses x (1 + Number of Fields), and its example is 5,000 addresses with the census append, which is 10,000 lookups. To get the tract, the congressional district and the school district you add the census, cd and school appends, so one address is four lookups. At $1 per 1,000 lookups that is about $4 per 1,000 addresses beyond the free daily 2,500, calculated from the printed rates.

Past years and extra data. The census append can return the geography for every census year back to 2010, and the 2000 geography with county, place, tract and block codes only. Geocodio also appends legislator information for each district, American Community Survey data, an accuracy score from 0.00 to 1.00 and an accuracy type with every result, and it reverse geocodes coordinates. 1Lookup returns the current geography for one address, with the benchmark and vintage it came from, and has no reverse lookup.

Geocodio's documentation says that instead of returning no results for an address it cannot find, it returns a point based on the postal code or city with a much lower accuracy score and an accuracy type of place, and recommends filtering on the score and the type. 1Lookup returns found: false when the Census Bureau cannot locate the address, with a REVIEW verdict and no charge, and returns the matched address in full with an APPROVE verdict when it can.

On price, history and range. It gives the first 2,500 lookups each day free and charges $1 per 1,000 after that, appends included, which is less per address than 1Lookup's Starter rate. It covers more countries, returns census geography for past years, adds demographic data, scores every match, reverse geocodes, and sells a dedicated instance for high volume. 1Lookup returns the tract, districts and school district without choosing fields or counting appends.

Yes on both. Geocodio takes up to 10,000 lookups in one batch request, counting appends, and has a lists API for spreadsheets with a 1 GB file size limit. 1Lookup takes a CSV with an address column of up to 2M rows and returns one row per address with the tract, county, district, metro area, place and school district, and a row that is not matched is a free row.

If you geocode in volume, need past census years, demographics or other countries, or want the cheapest price per address, Geocodio is the better fit. If you want a US address turned into its tract and districts in one flat answer, with a free miss and one balance that also pays for phone, email and IP checks, 1Lookup's Census Tract Lookup bills 2 credits only when the address is matched.

If you want a full geocoder with census years, districts, demographics and a free daily allowance, yes: the pricing page prints 2,500 free lookups a day and $1 per 1,000 after, and every append is counted. If you only need the tract and the districts of an address and want one price per address without counting, compare the per-lookup price of 1Lookup.