To see a list of Tile IDs, please visit the specific page here.
An entry is missing from a table! What can I do?
This means that changes have taken place on the wiki but the table is caching older data (this will automatically resolve after some time or you can also force the cache to reset by using the purge link under the "More" dropdown list), the entry is referring to an entity added in a recent game update and the page hasn't been added/updated yet, or there is an error in calling or storing table data.
What do I need these IDs for?
Basically, these IDs are used to index game elements. They may be useful in the development of third-party software, like mods or texture packs (i.e. if you are working with the game's code). In Terraria's sprites, some of these are labeled by ID so it makes finding those easier as well.