On the 1841 census, ages were usually (but not always) rounded down to the nearest five years for anyone over age 14 (i.e. someone aged 19 was listed as 15, 23 as 20, 42 as 40, etc.).  Plus, birthplaces were noted as being in the county or not in the county.  If not born in Scotland, the census indicated whether born in England, Ireland, or Foreign Parts.

Ayrshire

Largs, Ayrshire
Enumeration District 1, Page 13
Burnfoot

Marget Tinlin, female, age 25, FS [female servant], not born in Ayrshire.

Berwickshire

Earlston, Berwickshire
Enumeration District 1, Page 23
Earlstown

Alexander Tinlin, male, age 25, carrier, not born in Berwickshire.

Midlothian

Edinburgh St. Cuthberts, Midlothian
Enumeration District 6B, Page 10
No. 17 Veitches Square

James Tinlin, male, age 50, M.S. [male servant], not born in Midlothian.
Jean Tinlin, female, age 50, washer and draper, not born in Midlothian.
Isabella Tinlin, female, age 15, born in Midlothian.
Johnston Tinlin, male, age 9, born in Midlothian.
James Tinlin, male, age 2, born in Midlothian.

Edinburgh St. Cuthberts
Enumeration District 76, Page 3
Home Street 39

Elizabeth Tinlin, female, age 40, not born in Midlothian.

Peeblesshire

Traquair, Peeblesshire
Enumeration District 4, Page 3
West Lodge

James Tinline, male, age 32, Wood Forester, not born in Peeblesshire.
Isabella Tinline, female, age 32, His Wife, not born in Peeblesshire.
Margret Tinline, female, age 7, not born in Peeblesshire.
Elizabeth Tinline, female, age 4, not born in Peeblesshire.
William Tinline, male, age 2, not born in Peeblesshire.
Lydia Tinline, female, age 3 months, not born in Peeblesshire.

Roxburghshire

I searched through the entire census for Roxburghshire for 1841.  If a parish is not listed here, I did not find any Tinlin(e) listed in it.  I did not search for female Tinlins who had married and thus had a different surname.

Ancrum, Roxburghshire
Enumeration District 1, Page 10
Pinnacle

James Tinlin, age 25, Ag Lab, born in Roxburghshire.
Cactier [?] Easton [?], [female], age 60, born in Roxburghshire.
John Jardine, age 20, Ag Lab, born in Roxburghshire.

Ancrum, Roxburghshire
Enumeration District 1, Page 12
Milton Stable

John Tinlin, age 20, Ag Lab, born in Roxburghshire.
John Turnbull, age 15, Ag Lab, born in Roxburghshire.

Ashkirk, Roxburghshire
Enumeration District 2, Page 6
Haremos [?]
[In the home of James Glendenning, age 30, Road Contractor:]

James Tinlin, age 15, Ag Lab, born in Roxburghshire.

Ashkirk, Roxburghshire
Enumeration District 3, Page 7
Nookhaugh [?]
[In the home of James Scott, age 80, Independent:]

Jane Tinlin, age 25, Family Servant, born in Scotland, but not in Roxburghshire.

Bowden, Roxburghshire
Enumeration District 1, Page 4
Bowden

John Tinline, age 45, Blacksmith, born in Roxburghshire.
Janet Tinline, age 30, born in Roxburghshire.
Isabell Tinline, age 8, born in Roxburghshire.
Elisabeth Tinline, age 6, born in Roxburghshire.
James Tinline, age 4, born in Roxburghshire.
George Tinline, age 1, born in Roxburghshire.

Bowden, Roxburghshire
Enumeration District 1, Page 6
Bowden

William Tinline, age 50, Ag Lab, born in Roxburghshire.
Margaret McDonald, age 50, born in Roxburghshire.
Margaret Tinline, age 24, born in Roxburghshire.
Mary Tinline, age 12, born in Roxburghshire.
Alexander Tinline, age 10, born in Roxburghshire.
Janet Tinline, age 8, born in Roxburghshire.
Mary Tinline, age 1, born in Roxburghshire.
Mary McDonald, age 68, born in Roxburghshire.

Bowden, Roxburghshire
Enumeration District 1, Page 10
Bowden Mill
[In the home of Barbara Readmun, age 55:]

Robert Tinline, age 15, Manual Servant, born in Roxburghshire.

Bowden, Roxburghshire
Enumeration District 2, Page 4
Newhall Mill

George Tinline, age 55, Ag Lab, born in Roxburghshire.
Margaret Tinline, age 15, born in Roxburghshire.
Elisabeth Scott, age 60, born in Scotland, but not in Roxburghshire.

Crailing, Roxburghshire
Enumeration District 1, Page 2
Crailing Village

Isabel Tinline, age 30, born in Roxburghshire.
John Tinline, age 4, born in Roxburghshire.
William Tinline, age 2, born in Roxburghshire.
James Oliver, age 35, born in Roxburghshire.

Crailing, Roxburghshire
Enumeration District 1, Page 12
Littledranlus [?]
[In the home of Jane Ker, age 30:]

Ann Tinline, age 15, Family Servant, born in Roxburghshire.

Crailing, Roxburghshire
Enumeration District 2, Page 5
West Nisbet

Elizabeth Tinline, age 74, born in Roxburghshire.
Christian Tinline, age 37 [female], Ag Lab, born in Roxburghshire.
Christian Scott, age 13 [female], Ag Lab, born in Roxburghshire.
William Maxwell, age 9, born in Roxburghshire.

Galashiels, Roxburghshire
Enumeration District 1, Page 4
Lindean Stable Loft

Thomas Tinling, male, age 15, labourer, born in Scotland.  [This entry not in Dictionary yet.]

Hawick, Roxburghshire
Enumeration District 5, Page 5
Fore Row, Hawick

Ann Tinlin, age 69, born in Roxburghshire.
John Tinlin, age 65, Woollen Hose sorter [?], born in Roxburghshire.
John Carswell [?], age 26, W.S.N.J. [don’t know what that means], born in Roxburghshire.

Jedburgh, Roxburghshire
1st Jedburgh Parish
Enumeration District 3, Page 17
Old Bridge End
[In the home of Thomas Wait, age 53, miller:]

Margaret Tinline, age 17, born in Roxburghshire.

Jedburgh, Roxburghshire
1st Jedburgh Parish
Enumeration District 3, Page 19
Bonndanes

John Tinline, age 50, Stocking M.S., born in Roxburghshire.

Jedburgh, Roxburghshire
2nd Jedburgh Parish
Enumeration District 2, Page 3
Crailinghall

William Tinline, age 35, Ag Lab, born in Roxburghshire.
Isabella Hunter, age 55, born in Roxburghshire.
Jessy Laidlaw, age 20, Ag Lab, born in Roxburghshire.

Jedburgh, Roxburghshire
2nd Jedburgh Parish
Enumeration District 3, Page 13
Farnichirst Mill

Robert Tinline, age 20, Miller, born in Roxburghshire.
Andrew Tully, age 15, Ag Lab, born in Roxburghshire.
George Sword, age 11, Ag Lab, born in Roxburghshire.

Jedburgh, Roxburghshire
2nd Jedburgh Parish
Enumeration District 6, Page 2
Bonjedward
[In the home of Agness Crocks, Widow, age 40:]

Agness Tinlin, age 3, born in Roxburghshire.

Jedburgh, Roxburghshire
2nd Jedburgh Parish
Enumeration District 7, Page 10
Huntford
[In the home of Robert Cowan, age 44, Road Contractor:]

Robert Tinline, age 28, Labourer, born in Roxburghshire.

Kelso, Roxburghshire
Enumeration District 3, Page 18
Roxburgh Street, East Side, Kelso
[In the home of James Pairns, age 60, farmer:]

Walter Tinlin, age 15, Manual Servant, born in Roxburghshire.

Kirktown, Roxburghshire
Enumeration District 1, Page 2
High Tofts

George Tinline, age 65, Labourer, born in Roxburghshire.
Alison Tinline, age 55, born in Roxburghshire.
Mary Tinline, age 3, born in Roxburghshire.

Lilliesleaf, Roxburghshire
Enumeration District 2, Page 2
Bewliehill
[In the home of Janet Henderson, age 55:]

Mina Tinline, age 15, Family Servant, born in Roxburghshire.

Linton, Roxburghshire
Enumeration District 2, Page 3
Linton Burnpost

William Tinlan, age 15, Ag Lab, born in Roxburghshire.

Linton, Roxburghshire
Enumeration District 2, Page 11
Linton Bankhead

John Tinlan, age 50, Ag Lab, born in Roxburghshire.
Thomas Tinlan, age 20, Ag Lab, born in Roxburghshire.
Jane Tinlan, age 15, born in Roxburghshire.
Alison Tinlan, age 14, born in Roxburghshire.
George Tinlan, age 10, born in Roxburghshire.
Andrew Tinlan, age 8, born in Roxburghshire.
Agnes Tinlan, age 5, born in Roxburghshire.
John Tinlan, age 12, born in Roxburghshire.

Melrose, Roxburghshire
Enumeration District 1, Page 14
Abbey Street

Andrew Tinline, age 50, F. Miller, born in Roxburghshire.
Isabella Tinline, age 55, born in Roxburghshire.

Melrose, Roxburghshire
Enumeration District 1, Page 16
Buccleuch Street
[In the home of William Thomson, age 40, Tailor:]

Walter Tingling, age 20, T. Tailor [J. Tailor?], no birthplace noted.

Melrose, Roxburghshire
Enumeration District 1, Page 17
Buccleuch Street

George Tingline, age 15, Ap. Smith, born in Roxburghshire.

Melrose, Roxburghshire
Enumeration District 3, Page 1
St. Helens
[In the home of Francis Blaikie, Esq., age 70, Independent:]

Margaret Tinline, age 40, Family Servant, born in Roxburghshire.

Melrose, Roxburghshire
Enumeration District 6, Page 13-14
Greenwells, Glenburney

Thomas Tinlin, age 30, Ag Lab, born in Scotland, but not in Roxburghshire.
Charlot Tinlin, age 30, born in Scotland, but not in Roxburghshire.
Margaret Tinlin, age 12, born in England.
Jane Tinline, age 4, born in Roxburghshire.
Alison Tinline, age 2, born in Roxburghshire.
[Note: the name changes from Tinlin to Tinline in the original.]

Morebattle, Roxburghshire
Enumeration District 1, Page 13
Morebattle

James Tinline, age 45, labourer, born in Roxburghshire.
Hannah Tinline, age 45, born in Roxburghshire.
John Tinline, age 15, labourer, born in Roxburghshire.
James Tinline, age 10, born in Roxburghshire.
Andrew Tinline, age 8, born in Roxburghshire.
Ann Tinline, age 5, born in Roxburghshire.

Roxburgh, Roxburghshire
Enumeration District 4, Page 2
Waterdykes over Roxburgh
[In the home of William Thomson, age 50, farmer:]

Agnes Tinline, age 20, Family Servant, born in Roxburghshire.

Roxburgh, Roxburghshire
Enumeration District 5, Page 6
Roxburgh Mill

William Tinline, age 25, Ag Labourer, born in Scotland, but not in Roxburghshire.
Alison Tinline, age 26, born in Roxburghshire.

Roxburgh, Roxburghshire
Enumeration District 6, Page 3
Friars
[In the home of Sophia Roberton, age 80, Independent:]

Janet Tinline, age 15, Family Servant, born in Roxburghshire.

Sprouston, Roxburghshire
Easter Softlaw

Charles Tinling, male, age 20, agricultural labourer, born in Roxburghshire.

Sprouston, Roxburghshire
Thomas Tinling, male, age 60, labourer, born in Roxburghshire.
Janet Tinling, female, age 65, born in Roxburghshire.

Sprouston, Roxburghshire
Lempitlaw East Field

George Tinlin, male age 15, agricultural labourer, born in Roxburghshire.

Sprouston, Roxburghshire
Lempitlaw East Field

George Tinline, male, age 60, general labourer, born in Roxburghshire.
Jennet Tinline, female, age 50, born in Roxburghshire.
John Tinline, male, age 25, agricultural labourer, born in Roxburghshire.
James Tinline, male, age 21, agricultural labourer, born in Roxburghshire.
Isabella Tinline, female, age 14, agricultural labourer, born in Roxburghshire.

Yetholm, Roxburghshire
Enumeration District 3, Page 4
Kirk Yetholm

Jennet Tinlin, age 60, “Sp. Deal”, born in Roxburghshire.
James Tinlin, age 25, Ag Lab, born in Scotland, but not in Roxburghshire.

Selkirkshire

Ashkirk, Selkirkshire
Enumeration District 1, Page 7
Nock Haugh

Jane Tinlin, female, age 25, FS [female servant], not born in Selkirkshire.

Galashiels, Selkirkshire
775/00 001/01, Page 13
Galashiels

Marget Tinling, female, age 70, Hawker, not born in Roxburghshire [Selkirkshire?].

Selkirk, Selkirkshire
Enumeration District 4, Page 1
Yair Raig

William Tinline, male, age 20, Mason, not born in Selkirkshire.