Indianapolis and the I-69 cities, plus South Bend
Interstate 69 ties together several of Indiana's main card-shop cities. From Evansville it runs north past Bloomington to Indianapolis, loops around the south and east sides of the city on I-465, and carries on northeast to Fort Wayne. South Bend is off that line, roughly two and a half hours north of Indianapolis by US-31.
Indianapolis has far more listings than anywhere else in the state. On the south side, a mix of sports-card shops and game stores runs along Madison Avenue and Shelby Street toward Greenwood. The north side has its own group, between 82nd and 96th Streets.
Statewide, the listings run mostly to Magic and Pokémon stores, and only a handful mention vintage, graded or Japanese cards.
Card shows, conventions, and tournaments happening across Indiana.