| Census: | 1851 |
| County: | Ayrshire (AYR) |
| District: | Ayr |
| Civil Parish: | Muirkirk |
| Ecclesiastical Parish: | Muirkirk |
| Piece: | 607 |
| Enumeration District: | 2 |
| Folio: | 0 |
| Page: | 11 |
| Schedule: | 49 |
| House Number: | |
| House or Street Name: | Muirkirk Village |
| Surname | Forenames | Relationship | Marital Status | Sex | Age | Occupation | Birth County | Birth Place | Disability | Notes |
| HARKNESS | James | Head | M | M | 38 | Puddler | Dumfriesshire | Sanquhar | ||
| HARKNESS | Esther | Wife | M | F | 41 | Ayrshire | Auchinleck | |||
| HARKNESS | Agnes | Dau | U | F | 18 | Farm Servant | Ayrshire | New Cumnock (or N Cumnock) | ||
| HARKNESS | Geo | Son | - | M | 9 | Scholar | Ayrshire | Muirkirk (or Mkk) | ||
| HARKNESS | Mary | Dau | - | F | 7 | Scholar | Ayrshire | Muirkirk (or Mkk) | ||
| HARKNESS | John | Son | - | M | 5 | Ayrshire | Muirkirk (or Mkk) | |||
| HARKNESS | Robt | Son | - | M | 3 | Ayrshire | Muirkirk (or Mkk) |