I am using an old paperback copy of To Kill a Mockingbird, so the page numbers will probably not be the same as your own. I have provided the chapter for each location, however.
MAYCOMB COUNTY COURTHOUSE. Chapter 15
COURTHOUSE SQUARE. Chapter 15
MAYCOMB BANK BUILDING. Chapter 15
NEWSPAPER OFFICE. Chapter 15
POST OFFICE. Chapter 15
V. J. ELMORE'S. Chapter 11
DRUG STORE. Chapter 16
CECIL JACOBS' HOUSE. Chapter 4
MISS MAUDIE'S HOUSE. Chapter 5
MR. AVERY'S HOUSE. Chapter 6
MISS CAROLINE (Roomed in Miss Maudie's house). Chapter 2
MISS STEPHANIE'S HOUSE. Chapter 8
THE FINCH'S HOUSE. Chapter 1
THE RADLEY HOUSE. Chapter 1
MRS. DUBOSE'S HOUSE. Chapter 1
MISS RACHEL'S HOUSE. Chapter 1
THE EWELL HOUSE. Chapter 17
TOM ROBINSON'S HOUSE. Chapter 9
DOLPHUS RAYMOND'S HOUSE. Chapter 16
THE CUNNINGHAMS. Chapter 1
FINCH'S LANDING. Chapter 1
THE QUARTERS. Chapter 12
THE DEW-DROP INN. Chapter 1
MAYCOMB COUNTY HIGH SCHOOL. Chapter 2
THE DUMP. Chapter 17
FIRST PURCHASE CHURCH. Chapter 12
BARKER'S EDDY. Chapter 25
OLD SARUM. Chapter 1
O. K. CAFE. Chapter 11
TYNDAL'S HARDWARE. Chapter 15
THE DEER PASTURE. Chapter 6
JITNEY JUNGLE. Chapter 16
The town of Maycomb, modeled after Harper Lee's hometown of Monroeville, Alabama, resembles many "tired old Southern towns" with its courthouse in the center of town. The main streets circle around this square on which the courthouse has been built. If this square is typical, there are probably sidewalks leading up to the doors on each side of the courthouse and park benches on which the Idlers' Club members probably sit and gossip. Inside the courthouse Atticus Finch has his office, as do others connected with the law. The post office is nearby, too, as are some of the established businesses.
--Chapter 1 (pages are from the Warner Books 1982 edition)
Located in this chapter is the mention of Finch's Landing (p.9), Old Sarum, the Cunninghams, (p.24-25 and p. 167, p.225, and p.229 also). and the DewDrop Inn & Fishing Camp (all on p. 14). Also, the first mention of Mrs. Dubose's house and Miss Rachel's house (p.11) comes in this chapter.
The Maycomb County High School (pp.8-9) is mentioned as part of the school grounds. They are south of the Finch home and slightly west of the Radley home.
Cecil Jacobs lives at the far end of the street (p.39); Mrs. Dubose lives "two doors up the street" from the Finches. (p.39)
Miss Maudie is a close neighbor of the Finches whose house is on the other side of the street from them. (p.46)
Mr. Avery is a boarder in a house that is across the street from Mrs. Dubose. (p.55)
The Deer Pasture is behind the Finch home. (p.58)
--Chapters 8 and 23
--Miss Stephanie's house is next to Miss Maudie's and directly across from the Finch home. (p.75 and p.219)
Tom Robinson is alluded to when Atticus confers with his brother Jack about the upcoming trial (p. 93). He is later mentioned in Chapter 19, of course, when he is on the witness stand.
Referring to the OK Cafe (p.106), Mrs. DuBose says Scout will end up waiting tables there if she does not change her ways.
V.J. Elmore's (p.105) variety store is where Scout buys her baton that Jem uses later to knock off the blooms of Mrs. Dubose's camellias. It is located on the square in town.
The Quarters is the area "outside the southern town limits" (p.120) where the blacks live.
Calpurnia takes the children to the First Purchase Church with her on a Sunday that Atticus must be in Montgomery. (p.120)
Newspaper Office, Post Office, Tyndal's Hardware, Courthouse, Courthouse square (p. 152) are all in the center of Maycomb.
Dolphus Raymond sits with the "Negroes" at the far corner of the courthouse square (p.162); he appears to drink liquor from a container in a paper bag.
Jitney Jungle (p.162) Miss Maudie does not believe that Miss Stephanie is telling the truth when she says she is on her way to Jitney Jungle rather than the courthouse.
Drug Store (p.162) The drugstore is on the northeast corner of the square. People attend a "gala occasion" with the trial and the "more affluent chased their food with drugstore Coca-Cola in bulb-shaped soda glasses."
Dump, the Ewells When Bob Ewell is called to testify, Scout describes the area where they live near the dump. "...the Ewells gave the dump a thorough gleaning every day, and the fruits of their industry...." (p.173)
Barker's Eddy (p. 242) is "at the end of a dirt road off the Meridian highway about a mile from town." This is "a swimming hole."