I had rented an 1850 microfilm, to search for my McEvoy ancestors. They had not shown up in an index but I was determined to search the whole film til I found them. They eventually showed up as McFroy.
This listing has other names I found along the way that were of interest to me. You may find a relative here. You may even find one you don't expect, that was 'just passing through Chicago' on his or her way West.
The rented microfilm I used was backwards, so you may need to go backwards or forwards one Ward to find a particular person.
The census is unusual in that it lists the names of those who died during a recent cholera outbreak.
Since film is backwards it starts with boat and canal workers, canal drivers, (lots of 12 to 20 year olds)
Page 928 has boats and vessels in Chicago
780 5243 M. Haley 23 Sailor unknown
5133 5203 James Healy 35 M Seaman Ireland
around page 923 there are lots of physicians and ministers
Ninth Ward
2393 2420 John Kinzie
2389 2414 Mr. Wm. 'bovy' 20 Ireland
2388 2413 Gurdon S. Hubbard 48 M from Mass with wife and kids (p 877 - stamped 424)
Saw names Parker and Tuttle
5109 5174 John Wentworth 45 M editor of the Democrat
Also shows East Chicago and there are farmers in E. Chicago (5042-5108)
p 898 John 'Nafres' 30 M Gardener from Hanover wife Augusta 19
Ninth Ward Lots of brewers
2310 2325 Richard Barry 38 from Ireland, wife 30, MA 2 (female)
2250 Samuel McKay and family from Ireland (grocers)
Ninth Ward
2234 2258 Ann Millendorf from PA 13, living with M 'Casmy' (wagonmaker from Ireland) and wife p 857
2220 2244 Michael Mullen (Muller?) and family
2203 2227 Christen H-ley 23 yo fireman, wife 20, Michael 6/12 mos
2191 2219 John McKay 25 England sailor; Wm. McKay 22 Scotland sailor
2623 2658 Mary Riley 70 Ireland; living with Ryan
8th Ward
2590 2625 Patrick Hal(e)y 26 carpenter Ireland, wife 22 IL, John 1 1/2 IL, Mary 6/12 Ireland (p 783 stamped 377)
3099 3144 Fred Kirfren 28 Germany farmer (p 847)
2999 2986 Hotel run by Chas. Cline and wife has
Charles Nichols laborer Germany 35;
Valentine Busch 23 brewer
Martin Henry 35 laborer Germany
2558 2586 John Brown, 30; Alice Brown, 26
7th Ward
3790 3831 Ed. Riley 32 Ireland bricklayer
Jos. Nichols 30 Germany bricklayer
3781 3821 John McMullen 18, Student at St. Mary's (he later goes on to be an important Catholic administrator)
3750 3790 W.B. Ogden 45 land agent; Sarah 15
3747 3787 Lots of Browns
2727 3767 Michael Lanz Germany (p 761, stamped 366); wife; daughter Mary,11; son 9; son 6; son 2/12
2578 3630 ? O Riley 23 or 25; Mrs. 20; daughter 2/12 (p.745)
3?132 3181 James Halleron b. Ireland 25 Male laborer living with Geo. Clark and wife and boarders (p 721; stamped 346)
3363 3413 R. Riley 30; female 8
3318 3368 Thomas Brown 30 Irl; Mrs. 30 Irl; Jnos 10 Irl; Michael 8 Irl; Mary A 5 IL; Bridgitt 3; Thos 6/12
Sixth Ward
4702 4768 John Ryley 30 drayman, Irl; Catherine 28; 4 children 1 to 8
Sixth Ward has lots of ship builders, ships carpenters etc.
5212 5275 Jas. Curtiss 44 Mayor of Chicago, from Connecticut, p 691 stamped 331
? Ward starting on page 696
3198 3248 Thos. Reardon 45 grocery; Johanna 28; Ellen Mass; Ma(r)y 2 US
3286 3256 Jno Rily 50
3295 3244 Mrs. Riley 30
3315 3365 ? Haley 30; Mrs. Haley 20; infant son
Fifth Ward?
Matthew Reardon 38 Irl ship carpenter; Mary 29; Patrick 9; Daniel 4; Michael 2
4284 4367 John Riley 30 laborer; Bridget 30; Mary A 6/12; Cath 20 (all Irl)
4282 4345 Pat Rily 28 laborer; wife
4256 4318 John Brown, 54 Gardener, Mass; wife 52; JJ 15; HA 13
4249 4319 W B Egan 42 Irl Real Estate Agent; wife 40 NY; Children 4-13 (NY and IL)
4235 4295 Anne Mullendorf 14 Germany living with another family
4705 4765 John Brown 13, Ill, living with Day family; Ellen Brown 30 Ireland
4040 4095 Rev. ? J McLaughlin 41; Rev. Patrick Terry 25
3977 4031Mary Mullen 50 Irl; thos 21 Sailor Irl; Jas 19 shoemaker Irl; John 17 sailor Irl; Patrick 15 clerk Irl; Michael Mullen 14 NY; William Mullen 11 NY; Bridget Mullen 13 NY: Mary Mullen 9 NY; Julia Mullen 7 NY
3932 3986 Philip Riley 22 laborer Irl; Anne 24 Irl
3877 3921 Formuller family (son Nicolus 4); C Mayerhufer 14 F Germany
3871 3915 Julia Rily 16 Irl wiving with Sherman family (Vt - Ill)
3814 3855 Isaac Brown 18 clerk England; Jacob Brown clerk England living with Dike family
Fourth Ward
2099 2173 Martin Haly 28 laborer Irl; Ellen 25 Irl
2073 2097 C. Hartung 23 M liquormaker
xxx6 20x0 J. Egan 24 Irl; miss egan 35 Irl
2030 2054 J. W. Kedzie 33 lawyer Mass
1988 2012 J. NaWemple 53 machinist; wife 49; MJ (or MT) 24; VC 20 F; Andrew 18; Lavinah H 16; LC 14 M; HE 12 M; Eugene 10 M; E 7 F
1965 1989 Geo. Brown 17 NY
1908 1931 Miss Riley 35 Irl; Jane 12; Mary 8; Lilea 6; Kate 5; Edward 3 - all Irl
This area has lots of German names
1846 1868 Miss Brown 20 NY; Harry 21 Haymaker NY; Charles 2 Ill; femaile 6/12 Ill
1836 1858 John Gubin 20 xBman; Thomas Gubin 20 sailor
1835 1857 Thomas Muller 23 Irl
1824 1846 Samuel Riley 30
1819 1841 D. Mullen 32 carpenter Irl
1806 1827 BB Brown 37 clerk CT; Mrs Brown Mass
1783 1806 Louis Kirven 16 Irl
1772 1793 J.M. Chamberlen 20 NY painter; wife 19 VT
1770 1791 W. McFroy 37 Cooper; Miss 35; Mary J 9; Margarit E 5; John 3 Wm 18 printer Peter 16 Cooper
2065 2087 and 2066 2090 Lithgow