Coal town or settlement
Koltan is a modern phonetic variant of Colton, an English surname derived from Old English place names. It typically refers to a town belonging to a person named Cola, or a settlement where charcoal was produced.
Less common today
Koltan isn't in the latest US Top 1000. It last peaked at #4,743 in 2013.
US births per 5-year period, 1990–present (SSA data).
