Type 'easy' or 'hard' to begin the quiz. Easy is a 5-degree grid, hard is a 2.5-degree grid. Then, try to name the LARGEST city in each grid square which fits the category label for each square. To name a city, you must first click on the grid square to make it have a GREEN border. Then, type in the city answer for that square followed by a '.' (a period). You are given a score from 0 to 100 based on your answer's population compared to the largest city accepted in that square (100 being you named the largest city).
LETTER: means the city starts with that letter.
NUMBER RANGE: (such as 2-5, 10+) means the city contains that many letters (excluding spaces and special characters).
POPULATION RANGE: (such as 50-100K) means the city has that range for its population.
2+ WORDS means the city name has 2 or more words (words denoted by a space or hyphen).
AK and HI are NOT included in this quiz as they often have grid squares with only one answer for this quiz.
At the end of the quiz the largest population missed answer will show in each unanswered square, and for those answered the largest city will be listed if you didn't answer it.
Quiz Takers 
This quiz proves that excluding CDPs from regular city quizzes in places like Maryland and Nevada essentially leaves those states almost completely empty.
Yeah but in some states even with CDP’s you don’t get all places – states like Alabama both cities/towns and CDP’s don’t cover the entire population of the state.
It comes down to the urbanization percentage of the state. In theory, if you add up all the cities and CDPs and divide the total by the state’s population, you should get a number close to that percentage.
The census data for Maryland does largely account for their urban populations. The thing that makes it stand out is the sheer percentage of its urban population that reside in CDPs (70%). The only other state that comes close to that percentage is Hawaii, which is of course 100% CDPs.
The Census Bureau states that CDPs are supposed to be “the statistical equivalents of incorporated places” as a way of generalizing the concept of city along the lines of “if it looks like a duck and quacks like a duck…”
I’m not saying it would be better if CDPs were included for every state. But if you’re going to include Hawaii’s, then you may as well include MD’s as well because the only practical difference between it and HI is that it also happens to have a handful of cities.
Nevada’s CDP percentage is also fairly high (40%), but if you were to include just the four huge CDPs in Clark county that have ~200K+ people (Paradise, Enterprise, Spring Valley and Sunrise Manor) then the statewide CDP percentage would drop to just 12%. But I guess you do count them in the Las Vegas metro quiz so it’s all good.
Since New England and New Jersey are almost entirely covered by municipalities covered in your city quizzes, shouldn’t their CDPs be excluded like Hawaii, since those places are already included in the town they’re in? I don’t think it makes sense for those places to show up in both types of quizzes.
I’m going to leave those ones, they are separate CDP’s and towns so the CDP’s are not technically included in my cities quizzes.
I am honestly surprised at the number of large CDPs in Maryland.
Certain metro areas seem to be heavy on the CDPs, too, namely Las Vegas, LA, the alluded-to Washington-Baltimore area and pretty much any metro area in Florida. Those are the keys to a good score, I think.