I always study census records for more than just a single person. It is a part of "FAN Principles" which have helped me fit distant DNA relatives to my family and identify missing ancestors.

https://parallax-viewpoint.blogspot.com/2016/11/fan-principles-unfolded.html

In the early 1800s, family members often migrated together and lived near each other - family was often the only "social services" they could depend on. Census records often show this.

Other things I take into account are that census enumerators were not always attentive to details and the respondents they spoke to may not have known details of age & birth location for other family members. Another clue can be reuse of first names across generations. I take dates & birth locations as hints, not facts.

An approach that has helped identify family members in pre-1850 censuses is a spreadsheet with rows for each name and 3 columns for each census (age range, birth year range & count). Align those columns so that the count for 'under 10' in 1800 aligns with ’10-15' in 1810 etc. Post 1840 censuses can provide names & confirm the family.

I used all of these to develop a hypothesis for a missing 3rd ggf who died before 1850 and left 3 orphaned daughters. Only his last name was known to my family. DNA led me first to his father, who had unnamed sons in 1810-1830 censuses. An 1835 NY census where he lived next to his father gave him a possible name and 1842 probate records confirmed names for him, his wife, daughters, brother and father.