How many dentists are within reach of your ZIP code?

Why this is worth knowing

Plenty of American towns have no dentist within five miles, and the gap is not random: it follows population, not need. If your answer is a small number, the practical moves are to widen the search, ask about the first available appointment rather than the nearest address, and check whether a practice a little further out takes your insurance.

The count comes from 410,638 dental practices in the federal registry, placed by the address each one filed, and 33,791 ZIP codes with published coordinates. It is the same data a health department would use, asked one ZIP code at a time.

What the answer means

A high number is a choice, not a guarantee: a hundred practices within ten miles still leaves you ringing round for an appointment this week. A low number is worth planning around. If the nearest practice is twenty miles away, the appointment that matters is the one you can reach on the day something hurts, so it is worth registering with somebody before you need them rather than after.

The rings are five, ten and twenty five miles because that is roughly a walk, a short drive and a journey you would think twice about with a swollen face.

Try a ZIP code

These are the busiest ones in the directory, if you want to see the shape of the answer before you type your own:

02118 Boston, MA10022 New York City, NY78229 San Antonio, TX32610 Gainesville, FL48109 Ann Arbor, MI96814 Honolulu, HI

Distances are straight line from the middle of the ZIP code to the address each practice filed with the registry. A road trip is always longer than a straight line, and a registered address is not a promise of an open appointment.

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