Delaware is not the oldest state in the country, but is the first state to ratify the Constitution - that's what it says on their plates, after all!
Delaware is best known for their small but affluent population (relative to the rest of the country) and, in license plate enthusiast circles, for their all-numeric passenger plates, a practice begun and continued since the state first began issuing license plates to motorists.
There is no true "high" for Delaware plates. Plate numbers are re-used and recycled once inactive (like Rhode Island, only greener). Standard plate serials have six digits, and maxed out at 999999 about a decade ago.
Like most states, low-number plates carry significant prestige. However, unlike almost every other state, Delaware allows the sale of active plate serials. Even considering Delaware issues only all-numeric standard passenger plates, it's still remarkable that low-number plates can easily sell for thousands (or even hundreds of thousands) of dollars. Good luck...
For more on Delaware plates, please visit ALPCA archivist Jordan Irazabal's site TheDelaware3000, which details the years-long effort of he and the plate-spotting community to find and document all active low-number Delaware plates.
Last updated: 31 August 2016