GROUP BY Column-name Problem (need Expression)

Please advise on how to get the GROUP BY coded in an acceptable way:

DECLARE @LO INT
DECLARE @HI INT
DECLARE @StartDate varchar(10)
DECLARE @EndDate varchar(10)

SELECT @StartDate = '01/01/2005'
SELECT @EndDate = '06/30/2005'
SELECT @LO= 250
SELECT @HI= 333

SELECT
StateCD
, CountyCD
, Zip
, Z.CityName
, Z.StateCode
, Z.CountyName
, 'Criteria' = 'JumboRange:' + Convert(varchar(4),@LO) + '-' +
Convert(varchar(4),@HI)
, 'StartingDate' = @StartDate
, 'ThruDate' = @EndDate
, JumboAmount = SUM(JumboAmount)
, JumboMortgages = SUM(JumboMortgages)
, JumboFIXMortgages= SUM(JumboFIXMortgages)
, JumboFIXAmount = SUM(JumboFIXAmount)
, JumboARMMortgages = SUM(JumboARMMortgages)
, JumboARMAmount= SUM(JumboARMAmount)
FROM LoanDetails T INNER JOIN dbo.ZipCodesPreferred Z
ON T.StateCD = Z.FIPS_State AND T.CountyCD = Z.FIPS_County AND T.Zip =
Z.ZipCode
GROUP BY
StateCD
, CountyCD
, Zip
, Z.CityName
, Z.StateCode
, Z.CountyName
, 'Criteria' = 'JumboRange:' + Convert(varchar(4),@LO) + '-' +
Convert(varchar(4),@HI)
, 'StartingDate' = @StartDate
, 'ThruDate' = @EndDate