positionstack vs PostalCodes
Same instrument, two spec sheets — measured, not claimed.
positionstack vs PostalCodes: common questions
Which is more reliable, positionstack or PostalCodes?
On our scheduled checks, positionstack leads on measured uptime — positionstack at 100% versus PostalCodes at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, positionstack or PostalCodes?
positionstack has the lower median latency in our checks — positionstack responds in 455 ms versus PostalCodes at 1030 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do positionstack and PostalCodes need an API key?
PostalCodes needs no key, while positionstack requires a free API key. If you want to start calling without signup, reach for PostalCodes first.
Can I call positionstack and PostalCodes from the browser?
Neither sends browser-friendly CORS headers reliably, so call positionstack and PostalCodes from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are positionstack and PostalCodes free for commercial use?
positionstack has unclear commercial terms, and PostalCodes has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.