Does Detroit Have More Registered Voters Than Population Actually Eligible To Vote?

It certainty appears so.

Per the City of Detroit Election Website, there were 508,535 Detroiters registered to vote for the 2022 election.

The total population of Detroit per the 2020 census is 672,351 and the current census population estimate for 2021 is 632,464.

Of that population,  the census has 32% of the population under the age of 18. Hence that 32% of the population is ineligible to be registered to vote.

That would imply that around 202,388 of the population is too young to vote. Even if we ignore the 2021 estimate and pretend the population didn't change at all from 2020 that would make 215,152 people ineligible to vote.

That would imply the total pool of people in Detroit eligible to register to voter is 430,076, or if you believe the population hasn't declined even a bit since 2020, a total of 457,199.

Anyone see the issue?

Even if Detroit managed to register 100% of those eligible to vote, which would be quite an unlikely feat of efficiency indeed, there should be 78,459 or 51,336 less voters on the voting rolls than there are currently.

Interestingly, even after losing population since 2020,  Detroit now has more registered voters.  The registered voter total in 2020 was 504,714.

So Detroit both lost population and yet increased the number of registered voters from 2020, yet even if the population remained the same since 2020 the city has at least, statistically speaking, 51,336 more registered voters now than the population should be able to provide.

While not proof of fraud, this does indicate Detroit needs a serious clean-up of their voter registration rolls. Having between 51,336-78,459 more registered voters than people who are actually eligible to vote certainly provides the means and opportunities for shenanigans to take place. 

Given our re-elected Secretary of State's refusal to clean up voter rolls in this state, don't expect that to happen anytime soon.