The following parishes records have been searched without finding any STERRYS:

Ashen (Baptisms 1560-1813, Marriages 1558-1837 & Burials 1558-1652 -Modern Transcript)
Ballingdon (Baptisms 1615-1812, Marriages 1696-1812 & Burials 1620-1812 -Modern Transcript)
Balchamp Otton (Baptisms 1578-1812, Marriages 1578-1837 & Burials 1578-1837 -Modern Transcript)
Belchamp St Pauls (Baptisms 1538-1778, Marriages 1538-1837 & Burials 1538-1800 -Modern Transcript)
Farnham (Baptisms 1559-1804 - Modern Transcription)
Foxearth (Baptisms 1551-1617, 1705-1812; Marriages 1705-1812; Burials 1705-1812-PR)
Helions Bumpstead (Baptisms 1559-1812, Marriages 1559-1837 and Burials 1558-1812 -Modern Transcript)
Leyton Parish Church plus St John Baptist's Chapel (Baptisms, Marriages & Burials 1820-1849)
Liston (Baptisms 1599-1812, Marriages 1602-1837 & Burials 1599-1812 - Index)
Stock Harward (Baptisms, Marriages & Burials 1563-1700)
Waltham Abbey Paradise Row Baptist (Births/Baptisms 1799-1818-IGI)
Woodford (Burials 1638-1812)

Monumental inscriptions for the following parishes have been checked without finding any Sterrys:
Bulmer
Chelmsford London Rd
Colne Engaine
Fairstead
Faulkbourne
Frating
Great Warley
Lexden
Mucking St John Baptist
Rainham, St Helen & St Giles
Rivenhall
Tolleshunt Knights
Wennington, St Mary and St Peter
Witham

The following parishes have been searched and have located STERRYS or similar:

Ashdon All Saints
Burials 1558-1980 [NBI]
1657 Jan 30 [daughter] Stary
1659 Jan 24 Alemenrt Stary

Bocking St Mary the Virgin
Burials 1558-1954 [NBI]
1617 May 16 Johnes Starie?
1623 Jan 23 Anna Starie?

Bradwell Juxta Mare

The IGI lists one marriage:
1661 May 2 Emma Starey married Thomas Gelding

Canewdon St Nicholas
Burials 1636-1969 [NBI]
1768 Mar 20 Eliz Starey?

Chelmsford
Burials

There is a Sterry Will listed for Chelmsford:
1829 Eleonona Sterry, wid, Billericay, 245 BR33

There is a War Memorial at Chelmsford St Mary the Virgin (Catherdral) for an Annie Sterry in 1942 (ref. C22). Found on familyhistoryonline website.

Chigwell

The IGI lists one marriage:
1610 Sep 3 Richard Stary & Jane

There is a Boyd's Marriage Index entry:
1610 STARY Ric & Jane ..., Chigwell

Colchester All Saints

There are Boyd's Marriage Index entries:
1690 STIRIE Savil & An Ball, Colchester AS
1715 STERRY Elz & Peter Daw, Colchester AS

Colchester St Botolph

There are Boyd's Marriage Index entries:
1605 STERE Emme & Rob Polhill, Colchester Bot
1610 STERE Mary & Tho Hawkins, Colchester Bot

Colchester St Nicholas

There is a Boyd's Marriage Index entry:
1689 STERRY Wm & Mary Rainham, Colchester Nic

Grays Thurrock St Peter & St Paul
Marriages
There is a Boyd's Marriage Index entry:
1747 STERRY Nath & Elz Sach, Grays Thurrock

Grays Thurrock St Peter & St Paul
Burials 1674-1955 [NBI]
1719 Dec 18 Nathaniel Sterry, chd
1727 Mar 15 Mary Sterry
1734 Sep 9 John Sterry
1754 Apr 14 Robert Sterry

Great Burstead St Mary Magdalene
Burials 1627-1857 [NBI]
#1773 Apr 7 Mary Sterry (Also found on familyhistoryonline website as MI)
#1829 Feb 2 Eleonora Sterry aged 80

Harwich St Nicholas
Burials 1559-1989 [NBI]
1711 Mar 9 John Sterry

Havering
Baptisms

Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following baptisms at Havering:
1800 Nov 1 Wasey s. Benjamin and Mary Sterry

Henham St Mary the Virgin
Marriages

The IGI lists one marriage:
#1795 Dec 8 Samuel Henry Sterry and Mary Dowley

Henham St Mary the Virgin
Burials 1539-1878 [NBI]
#1779 Feb 8 Wasey Sterry

Hornchurch
Marriages

Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following marriage at Hornchurch:
#1822 May 16 Henry Tweed & Mary Johnson Sterry

Kelvedon

Walter Smith's book The Sterry Family lists a marriage in this parish:
1634 Thomas STERRY Married Phillippa TERRANCE at Kelorden

There is a Boyd's Marriage Index entry:
1634 Sterry Tho & Phillip Temance, Kelvedon

Langham St Mary
Burials 1678-1979 [NBI]
1930 May 17 Leonard William Sterry aged 51

Messing

There is a Boyd's Marriage Index entry:
1610 STERE Su & Will Root, Messing

Romford St Edward
Baptisms

Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following baptisms at Romford:
#1796 Dec 23 Ellen Benge d. Benjamin Wasey and Mary Sterry [IGI has Benjamin Massey]
#1798 May 4 Charles s. Benjamin Wasey and Mary Sterry [IGI has Baptised Apr 1798]
#1802 Nov 2 William s. Benjamin and Mary Sterry [Also in IGI]
#1804 Mar 13 Frances Sterry d. Benjamin and Mary Sterry [Also in IGI]

Romford St Edward
Marriages

Walter Smith's book The Sterry Family lists a marriage in this parish:
1713 Oct 13 Robert STERRY Married Mary WOOD at Romford, Essex. Both Robert and Mary of Gray's Thurcock. [This marriage also listed in the IGI.]

There are Boyd's Marriage Index entries:
1575 STERRY Jn & Maria Story, Romford
1713 STERRY Rob & Mary Wood, Romford

Romford St Edward
Burials1813-1937 [NBI]; also Howard's Visitation of England and Wales (1895), i, pp180-182
#1798 Oct 4 Charles Sterry
1822 Sep 20 Elizabeth Stearry?, age 85
#1826 Apr 14 Mary Sterry, 59
#1830 Jun 3 Benjamin Wasey Sterry, 62, buried in family vault [NBI has aged 64]
#1842 Jul 15 Wasey Sterry, 41, buried in family vault [NBI has Jul 23]
#1842 Jul 23 Son Sterry, buried in family vault

There are Monumental Inscriptions in St Edward's, Romford:
#STERRY (in church) Benjamin (62) 1830
#STERRY (in church) Maria (59) 1826
#STERRY (in church) Wasey (41) 1842

Shenfield
Baptisms
Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following baptisms at Shenfield:
#1767 May 14 [born 9 Apr] Benjamin Wasey Sterry s. Wasey and Mary Sterry, Vicar of Henham

Sibil Hedingham
Baptisms 1560-1837 (PR)
1632 Mar 24 Martha d. Thos Steares

Sibil Hedingham
Marriages 1599-1800 (PR)
1783 Apr 29 Thomas Barnard & Mary Steare

Sibil Hedingham
Burials 1560-1837 (PR)
Nil

South Weald St Peter
Burials 1538-1939 [NBI]
1813 Sep 16 John Steary, age 84

Thaxted
Marriages

The IGI lists a marriage:
1790 Nov 26 Ann STERRY married Francis PATIENT

Tillingham St Nicholas
Burials 1561-1935 [NBI]
1704 ___ William Sterry

Upminster St Laurence
Baptisms

Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following baptisms at Upminster:
#1833 Dec 19 Wasey s. Wasey & Frances Sterry
#1835 Aug 14 Francis s. Wasey & Frances Sterry
#1839 Jan 12 Arthur s. Wasey & Frances Sterry
#1840 Sep 6 Frances d. Wasey & Frances Sterry

Upminster St Laurence
Marriages

Howard's Visitation of England and Wales (1895), i, pp180-182 lists the following marriage at Upminster:
#1836 Jun 14 Thomas George Norris and Ellen Benge Sterry [Also in Boyd's Marriages]
#1851 Jul 29 Luther Holden and Frances Sterry

Upminster St Laurence
Burials 1543-1897 [NBI]; also Howard's Visitation of England and Wales (1895), i, pp180-182
1836 Dec 24 Wesley Sterry aged 5mths
#1858 Jul 29 Wasey Sterry aged 24

Wivenhoe

There is a Boyd's Marriage Index entry:
1649 STERE Dan & Rose Hamton, Wyvenhoe

There is a Boyd's Marriage Index entry for a Quaker marriage, parish not indicated:
#1799 STERRY Jos & An Hix, Friends

Legend:

# = Ruardean, Surrey, UK line